Forces — Paper 1 · IGCSE Sciences - Co-ordinated (Double) 0654

30 Objects with different masses are hung on a 10 cm spring. The diagram shows how much the spring stretches. 10 cm 20 cm 30 cm 100 g M The extension of the spring is directly proportional to the mass hung on it. What is the mass of object M? A 110 g B 150 g C 200 g D 300 g

1 marks

Answer: C

This question in 0654/11 May/June 2005

36 A vehicle of mass 900 kg is travelling with a velocity of 20 m / s. What is the momentum of the vehicle? A 45 Ns B 450 Ns C 18 000 Ns D 180 000 Ns

1 marks

Answer: C

This question in 0654/11 May/June 2007

37 The diagram, which is not to scale, shows the planets Mars and Earth. Mars Earth Which statement is correct? A Earth repels Mars but Mars attracts Earth. B Earth attracts Mars but Mars repels Earth. C Earth and Mars attract each other. D Earth and Mars repel each other.

1 marks

Answer: C

This question in 0654/11 May/June 2007

30 A train is travelling along a horizontal track at constant speed. Two of the forces acting on the train are shown in the diagram. forwards force from engine friction 60 000 N 20 000 N A force of air resistance is also acting on the train so that the forces balance. What is this air resistance force? A 40 000 N backwards B 80 000 N backwards C 40 000 N forwards D 80 000 N forwards

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2008

30 A wooden plank rests in equilibrium on two boulders on opposite sides of a narrow stream. Three forces of size P, Q and R act on the plank. P R plank Q How are the sizes of the forces related? A P + Q = R B P + R = Q C P = Q = R D P = Q + R

1 marks

Answer: B

This question in 0654/11 May/June 2009

31 The object in the diagram is acted upon by the two forces shown. 3 N 2 N object What is the effect of these forces? A The object moves to the left with constant speed. B The object moves to the left with constant acceleration. C The object moves to the right with constant speed. D The object moves to the right with constant acceleration.

1 marks

Answer: D

This question in 0654/11 Oct/Nov 2009

30 A rod is acted upon by two forces as shown in the diagram. 5 N 5 N Which effect will be produced by these two forces? A both rotation and movement in a straight line B rotation only C no effect, because the forces are balanced D movement in a straight line only

1 marks

Answer: B

This question in 0654/11 May/June 2010

35 A rod is acted upon by two forces as shown in the diagram. 5 N 5 N Which effect will be produced by these two forces? A both rotation and movement in a straight line B rotation only C no effect, because the forces are balanced D movement in a straight line only

1 marks

Answer: B

This question in 0654/12 May/June 2010

30 Four beams are each balanced on a pivot at their centres as shown. Forces are then applied to the beams as shown. Which beam will not rotate when the forces shown are applied? A B 10 N 10 N 10 N 10 N C D 10 N 10 N 10 N 10 N 10 N 10 N

1 marks

Answer: C

This question in 0654/11 Oct/Nov 2010

32 Four beams are each balanced on a pivot at their centres as shown. Forces are then applied to the beams as shown. Which beam will not rotate when the forces shown are applied? A B 10 N 10 N 10 N 10 N C D 10 N 10 N 10 N 10 N 10 N 10 N

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2010

30 Four beams are each balanced on a pivot at their centres as shown. Forces are then applied to the beams as shown. Which beam will not rotate when the forces shown are applied? A B 10 N 10 N 10 N 10 N C D 10 N 10 N 10 N 10 N 10 N 10 N

1 marks

Answer: C

This question in 0654/13 Oct/Nov 2010

29 A car rolls down a hill at a constant speed. constant speed Which row describes the friction force and the unbalanced force acting on the car? friction force unbalanced force A acts downhill acts downhill B acts uphill acts downhill C acts uphill is zero D is zero is zero

1 marks

Answer: C

This question in 0654/11 Oct/Nov 2011

35 A sky-diver jumps from a helicopter which is very high and not moving. She does not open her parachute when she first jumps. Which row describes her acceleration and the air resistance acting on her in the first few seconds as she falls? acceleration air resistance A constant constant B constant increasing C decreasing constant D decreasing increasing

1 marks

Answer: D

This question in 0654/11 Oct/Nov 2011

30 A car rolls down a hill at a constant speed. constant speed Which row describes the friction force and the unbalanced force acting on the car? friction force unbalanced force A acts downhill acts downhill B acts uphill acts downhill C acts uphill is zero D is zero is zero

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2011

35 A sky-diver jumps from a helicopter which is very high and not moving. She does not open her parachute when she first jumps. Which row describes her acceleration and the air resistance acting on her in the first few seconds as she falls? acceleration air resistance A constant constant B constant increasing C decreasing constant D decreasing increasing

1 marks

Answer: D

This question in 0654/12 Oct/Nov 2011

31 A car rolls down a hill at a constant speed. constant speed Which row describes the friction force and the unbalanced force acting on the car? friction force unbalanced force A acts downhill acts downhill B acts uphill acts downhill C acts uphill is zero D is zero is zero

1 marks

Answer: C

This question in 0654/13 Oct/Nov 2011

35 A sky-diver jumps from a helicopter which is very high and not moving. She does not open her parachute when she first jumps. Which row describes her acceleration and the air resistance acting on her in the first few seconds as she falls? acceleration air resistance A constant constant B constant increasing C decreasing constant D decreasing increasing

1 marks

Answer: D

This question in 0654/13 Oct/Nov 2011

29 Which property of an object cannot be affected by applying a force? A direction of movement B mass C shape D speed

1 marks

Answer: B

This question in 0654/11 May/June 2013

29 Three forces act in the directions shown on each of the four blocks. Which block is in equilibrium? A B 4 N 10 N 6 N 10 N 10 N 10 N C D 6 N 12 N 8 N 16 N 6 N 10 N

1 marks

Answer: C

This question in 0654/12 May/June 2013

28 Which property of an object cannot be affected by applying a force? A direction of movement B mass C shape D speed

1 marks

Answer: B

This question in 0654/13 May/June 2013

28 The diagram shows forces of equal size acting on a moving car. total resistive driving force force from engine Which speed / time graph represents the motion of the car? A B speed speed 0 0 0 time 0 time C D speed speed 0 0 0 time 0 time

1 marks

Answer: A

This question in 0654/12 May/June 2014

29 Three forces act on a block. 9 N 15 N 9 N What is the resultant force and what is its direction? A 3 N to the right B 6 N to the left C 15 N to the left D 18 N to the right

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2014

30 Three forces act on a block. 9 N 15 N 9 N What is the resultant force and what is its direction? A 3 N to the right B 6 N to the left C 15 N to the left D 18 N to the right

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2014

30 A train travels along a horizontal track at constant speed. Two of the forces acting on the train are shown in the diagram. backwards force forwards force 20 000 N 60 000 N A force of air resistance is also acting on the train to give it a resultant force of zero. What is this air resistance force? A 40 000 N backwards B 80 000 N backwards C 40 000 N forwards D 80 000 N forwards

1 marks

Answer: A

This question in 0654/11 May/June 2015

30 A train travels along a horizontal track at constant speed. Two of the forces acting on the train are shown in the diagram. backwards force forwards force 20 000 N 60 000 N A force of air resistance is also acting on the train to give it a resultant force of zero. What is this air resistance force? A 40 000 N backwards B 80 000 N backwards C 40 000 N forwards D 80 000 N forwards

1 marks

Answer: A

This question in 0654/12 May/June 2015

30 A train travels along a horizontal track at constant speed. Two of the forces acting on the train are shown in the diagram. backwards force forwards force 20 000 N 60 000 N A force of air resistance is also acting on the train to give it a resultant force of zero. What is this air resistance force? A 40 000 N backwards B 80 000 N backwards C 40 000 N forwards D 80 000 N forwards

1 marks

Answer: A

This question in 0654/13 May/June 2015

29 Diagram 1 shows a spring with its length indicated. Diagram 2 shows the same spring with a 20 N load hung from it, and the new length of the spring. The extension of the spring is directly proportional to the load hung on it. 15 cm 25 cm 20 N diagram 1 diagram 2 Which graph is the extension / load graph for the spring? A B 30 30 extension / cm extension / cm 20 20 10 10 0 0 0 10 20 30 0 10 20 30 load / N load / N C D 30 30 extension / cm extension / cm 20 20 10 10 0 0 0 10 20 30 0 10 20 30 load / N load / N

1 marks

Answer: B

This question in 0654/11 May/June 2016

28 A student tests three identical springs. Each spring stretches by 3.0 cm when a 3.0 N load is suspended from one end of it. The extension of each spring is directly proportional to the load applied. The three springs are connected together as shown. A 1.0 N load is placed on the end of the springs. 1.0 N What is the total extension of all the springs together? A 1.0 cm B 3.0 cm C 6.0 cm D 9.0 cm

1 marks

Answer: B

This question in 0654/11 Oct/Nov 2016

29 A car is travelling along a straight, horizontal road at constant speed. Which statement about forces on the car is correct? A There are no horizontal forces acting on the car. B There is a resultant force on the car in the direction of its movement. C There is a resultant force on the car in the direction opposite to its movement. D There is no resultant force acting on the car.

1 marks

Answer: D

This question in 0654/12 Oct/Nov 2018

29 The diagrams show all the forces acting on each of four objects. Which object is not in equilibrium? A B 4.0 N 4.0 N 6.0 N 5.0 N 8.0 N 8.0 N 2.0 N 3.0 N 4.0 N 4.0 N C D 3.0 N 4.0 N 3.0 N 2.0 N 6.0 N 6.0 N 6.0 N 6.0 N 7.0 N 4.0 N

1 marks

Answer: D

This question in 0654/13 Oct/Nov 2018

29 What cannot be changed by a force acting on a body? A the mass of the body B the motion of the body C the shape of the body D the size of the body

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2019

29 There is no resultant force acting on a body. Which statement is correct? A The body is either at rest or moving at constant speed in a straight line. B The body must be at rest. C The body is gaining speed. D The body is losing speed.

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2019

30 Two children X and Y pull on a rope in opposite directions. The diagram shows the size of each force and its direction. X Y 500 N 450 N What is the resultant force on the rope? A 50 N towards X B 50 N towards Y C 950 N towards X D 950 N towards Y

1 marks

Answer: A

This question in 0654/11 May/June 2020

29 The diagram shows two teams P and Q pulling on a rope. Team P pulls with a force of 500 N to the left and team Q pulls with a force of 800 N to the right. middle team P of rope team Q 500 N 800 N What is the resultant force acting on the middle of the rope? A 300 N to the left B 300 N to the right C 1300 N to the left D 1300 N to the right

1 marks

Answer: B

This question in 0654/13 May/June 2020

29 The diagram shows the two forces acting on a skydiver. 300 N 700 N What is the resultant force on the skydiver? A 400 N downwards B 400 N upwards C 1000 N downwards D 1000 N upwards

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2020

29 Which property of a body cannot be changed by the application of a force? A mass B motion C shape D size

1 marks

Answer: A

This question in 0654/12 Feb/March 2021

30 A scientist uses a lever to lift a heavy load. She applies a force of 120 N at a distance of 360 cm from a pivot. 360 cm load 120 N pivot What is the moment about the pivot of the force applied by the scientist? A 3.0 N m B 33.3 N m C 432 N m D 43 200 N m

1 marks

Answer: C

This question in 0654/12 Feb/March 2021

30 Which statement applies to a system in equilibrium? A There is a resultant force and there is a resultant turning effect on the system. B There is a resultant force but there is no resultant turning effect on the system. C There is no resultant force but there is a resultant turning effect on the system. D There is no resultant force and there is no resultant turning effect on the system.

1 marks

Answer: D

This question in 0654/11 May/June 2021

29 An object is falling freely near the Earth without air resistance. Which statement about the acceleration of the object is correct? A It is constant, but not zero. B It is decreasing. C It is increasing. D It is zero.

1 marks

Answer: A

This question in 0654/12 May/June 2021

30 Three objects X, Y and Z are at rest on a table. The centre of mass of each object is labelled M. M M M X Y Z What is the order of stability of these three objects, from most stable to least stable? A X  Y  Z B Y  Z  X C X  Z  Y D Z  Y  X

1 marks

Answer: D

This question in 0654/12 May/June 2021

29 An object is falling freely near the Earth without air resistance. Which statement about the acceleration of the object is correct? A It is constant, but not zero. B It is decreasing. C It is increasing. D It is zero.

1 marks

Answer: A

This question in 0654/13 May/June 2021

30 Three objects X, Y and Z are at rest on a table. The centre of mass of each object is labelled M. M M M X Y Z What is the order of stability of these three objects, from most stable to least stable? A X  Y  Z B Y  Z  X C X  Z  Y D Z  Y  X

1 marks

Answer: D

This question in 0654/13 May/June 2021

29 The diagram shows a large force of magnitude P and a small force of magnitude Q acting on a box. box P Q Which expression gives the magnitude of the resultant force on the box? P A P + Q B P – Q C P  Q D Q

1 marks

Answer: B

This question in 0654/11 Oct/Nov 2021

29 What is meant by the moment of a force? A the speed of an object moved by a force B the time taken for a force to move an object C the turning effect of a force D the work done by a force

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2021

29 A student wishes to determine the centre of mass of a piece of card. She makes five holes in the card. She suspends the card from a pin, as shown. She hangs a load from a thread attached to the pin and marks the line of the thread on the card. hole pin card thread load The student repeats the procedure using a different hole. What is the smallest number of lines that she needs to draw to determine the position of the centre of mass of the card? A 1 B 2 C 3 D 4

1 marks

Answer: B

This question in 0654/13 Oct/Nov 2021

29 The diagram shows a metre rule with a pivot at the 60 cm mark. A force of 6.0 N is applied at the 35 cm mark in the direction shown. 0 cm 35 cm 60 cm 100 cm pivot 6.0 N What is the moment of the 6.0 N force about the pivot? A 150 N cm B 210 N cm C 360 N cm D 390 N cm

1 marks

Answer: A

This question in 0654/12 Feb/March 2022

29 The diagrams show the only forces acting on four moving objects. Which object is travelling at constant speed? A B 9 N 10 N 10 N C D 10 N 10 N 10 N

1 marks

Answer: D

This question in 0654/11 May/June 2022

30 A uniform plank is placed on a pivot, with its centre immediately above the pivot. A load of 10 N is suspended on the left, 45 cm from the pivot, and a load of 20 N is suspended on the right, 45 cm from the pivot. 45 cm 45 cm 10 N 20 N What happens to the plank? A The left-hand side moves down, the right-hand side moves up and the plank does not return to its horizontal position. B The left-hand side moves up, the right-hand side moves down and the plank does not return to its horizontal position. C The plank moves down on one side then returns to its horizontal position. D The plank remains horizontal without moving.

1 marks

Answer: B

This question in 0654/11 May/June 2022

29 The diagrams show the two forces acting on four objects P, Q, R and S. P Q 4 N 12 N 12 N 4 N R S 2 N 8 N 10 N 2 N Which two objects experience equal resultant forces acting in the same direction? A P and Q B P and R C Q and R D Q and S

1 marks

Answer: D

This question in 0654/12 May/June 2022

29 The diagrams show the two forces acting on four objects P, Q, R and S. P Q 4 N 12 N 12 N 4 N R S 2 N 8 N 10 N 2 N Which two objects experience equal resultant forces acting in the same direction? A P and Q B P and R C Q and R D Q and S

1 marks

Answer: D

This question in 0654/13 May/June 2022

30 A force of 10 N is applied to a beam at a distance of 0.25 m from a pivot. 10 N 0.25 m pivot Which calculation gives the moment of the force about the pivot in N m? 10 A 10  0.25 B 0.25 C 10 + 0.25 D 10 – 0.25

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2022

30 An object is travelling at constant speed in a straight line. There is no resultant force on the object. What happens to the object? A It continues at constant speed but changes direction. B It continues at constant speed in the same direction. C Its speed decreases but it continues in the same direction. D Its speed increases but it continues in the same direction.

1 marks

Answer: B

This question in 0654/12 Oct/Nov 2022

29 A parachutist and his parachute have a combined weight W. The parachutist falls vertically towards the Earth’s surface. The force of air resistance R opposes his motion. The speed of the parachutist is constant. R W Which statement about the forces on the parachutist is correct? A W and R are both equal to zero. B W is equal to R and greater than zero. C W is greater than R. D W is less than R.

1 marks

Answer: B

This question in 0654/12 Feb/March 2023

30 What is a suitable unit for the moment of a force? A N kg B N / kg C N m D N / m

1 marks

Answer: C

This question in 0654/12 Feb/March 2023

30 The diagrams show all the forces acting on each of four objects. Which object is not in equilibrium? A B 4.0 N 4.0 N 6.0 N 5.0 N 8.0 N 8.0 N 2.0 N 3.0 N 4.0 N 4.0 N C D 3.0 N 4.0 N 3.0 N 2.0 N 6.0 N 6.0 N 6.0 N 6.0 N 7.0 N 4.0 N

1 marks

Answer: D

This question in 0654/11 May/June 2023

31 The diagram shows a triangular sheet of metal with sides of length 50 cm, 40 cm and 30 cm. The sheet is free to move about a pivot at the top corner, as shown. pivot 50 cm 40 cm 5.0 N 30 cm A cord is attached to the bottom left corner of the sheet and pulled with a horizontal force of 5.0 N to the left. What is the moment of the 5.0 N force about the pivot? A 150 N cm B 200 N cm C 250 N cm D 600 N cm

1 marks

Answer: B

This question in 0654/11 May/June 2023

28 Two children X and Y pull on a rope in opposite directions. The diagram shows the size of each force and its direction. X Y 500 N 450 N What is the resultant force on the rope? A 50 N towards X B 50 N towards Y C 950 N towards X D 950 N towards Y

1 marks

Answer: A

This question in 0654/12 May/June 2023

29 A boy pulls a nail from a block of wood using a hammer, as shown. 15 N hammer 0.22 m nail block of wood 0.060 m pivot The boy pulls the hammer with a force of 15 N in the position shown. What is the moment produced about the pivot by the boy pulling on the hammer? A 0.90 N m B 2.4 N m C 3.3 N m D 4.2 N m

1 marks

Answer: C

This question in 0654/12 May/June 2023

28 Two children X and Y pull on a rope in opposite directions. The diagram shows the size of each force and its direction. X Y 500 N 450 N What is the resultant force on the rope? A 50 N towards X B 50 N towards Y C 950 N towards X D 950 N towards Y

1 marks

Answer: A

This question in 0654/13 May/June 2023

29 A boy pulls a nail from a block of wood using a hammer, as shown. 15 N hammer 0.22 m nail block of wood 0.060 m pivot The boy pulls the hammer with a force of 15 N in the position shown. What is the moment produced about the pivot by the boy pulling on the hammer? A 0.90 N m B 2.4 N m C 3.3 N m D 4.2 N m

1 marks

Answer: C

This question in 0654/13 May/June 2023

30 The diagram shows a child of weight 240 N sitting on a see-saw (teeter-totter) at a distance of 1.6 m from the pivot. 1.6 m child pivot 240 N What is the moment of the weight of the child about the pivot, with the correct unit? A 150 N m B 150 N / m C 384 N m D 384 N / m

1 marks

Answer: C

This question in 0654/11 Oct/Nov 2023

28 The diagrams show four objects, each acted on by only two forces. Which object is in equilibrium? A B 1.0 N 3.0 N 4.0 N 2.0 N C D 1.0 N 2.0 N 2.0 N 2.0 N

1 marks

Answer: D

This question in 0654/13 Oct/Nov 2023

29 A train travels along a horizontal track at constant speed. Two of the forces acting on the train are shown. backwards force forwards force 20 000 N 60 000 N A force of air resistance is also acting on the train to give it a resultant force of zero. What is this air resistance force? A 40 000 N backwards B 80 000 N backwards C 40 000 N forwards D 80 000 N forwards

1 marks

Answer: A

This question in 0654/12 Feb/March 2024

29 The diagrams show all the forces acting on three objects, X, Y and Z. 10 N 5 N X Y Z 10 N 10 N 10 N 10 N 15 N Which of the objects experience a resultant force? A X, Y and Z B X only C Y and Z only D Y only

1 marks

Answer: C

This question in 0654/11 May/June 2024

30 Which statement about a resultant force is correct? A An object must have a resultant force acting on it if it is moving. B An object must have a resultant force acting on it if it is slowing down. C Two forces must be in the same direction to produce a resultant force. D Two forces must have the same magnitude to produce a resultant force.

1 marks

Answer: B

This question in 0654/12 May/June 2024

30 Which statement about a resultant force is correct? A An object must have a resultant force acting on it if it is moving. B An object must have a resultant force acting on it if it is slowing down. C Two forces must be in the same direction to produce a resultant force. D Two forces must have the same magnitude to produce a resultant force.

1 marks

Answer: B

This question in 0654/13 May/June 2024

29 The diagram shows the two forces acting on a skydiver. 300 N 700 N What is the resultant force on the skydiver? A 400 N downwards B 400 N upwards C 1000 N downwards D 1000 N upwards

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2024

29 The diagram shows four containers resting on a table. The containers have equal masses and square bases of equal areas. The centre of mass of each container is labelled X. Which container is the most stable? A B C D X X X X table

1 marks

Answer: D

This question in 0654/12 Oct/Nov 2024

29 The diagram shows four containers resting on a table. The containers have equal masses and square bases of equal areas. The centre of mass of each container is labelled X. Which container is the most stable? A B C D X X X X table

1 marks

Answer: D

This question in 0654/13 Oct/Nov 2024

29 A metal bar has weight 50 N and length 2.0 m. The centre of gravity of the bar is 0.80 m from the left-hand end. The bar is placed on a pivot at a point 0.40 m from the left-hand end. 0 m 0.40 m 0.80 m 2.0 m centre pivot of gravity What is the moment of the weight of the bar about the pivot? A 20 N m B 40 N m C 60 N m D 80 N m

1 marks

Answer: A

This question in 0654/11 May/June 2025

30 The diagram shows a large force of magnitude P and a small force of magnitude Q acting on a box. box P Q Which expression gives the magnitude of the resultant force on the box? P A B P  Q C P – Q D P + Q Q

1 marks

Answer: C

This question in 0654/11 May/June 2025

28 The diagrams show the only forces acting on each of four objects moving in a straight line. Which object is moving at constant speed in a straight line? A B 2.0 N 2.0 N 2.0 N C D 2.0 N 2.0 N 2.0 N 2.0 N

1 marks

Answer: D

This question in 0654/12 May/June 2025

30 The diagram shows four objects, P, Q, R and S, with uniform density, resting on different horizontal surfaces. The objects are all drawn to the same scale. P Q R S The surfaces are slowly tilted through an angle  until the object falls over. object θ For which object is the value of  the greatest? A object P B object Q C object R D object S

1 marks

Answer: B

This question in 0654/12 May/June 2025

28 The diagrams show the only forces acting on each of four objects moving in a straight line. Which object is moving at constant speed in a straight line? A B 2.0 N 2.0 N 2.0 N C D 2.0 N 2.0 N 2.0 N 2.0 N

1 marks

Answer: D

This question in 0654/13 May/June 2025

30 The diagram shows four objects, P, Q, R and S, with uniform density, resting on different horizontal surfaces. The objects are all drawn to the same scale. P Q R S The surfaces are slowly tilted through an angle  until the object falls over. object θ For which object is the value of  the greatest? A object P B object Q C object R D object S

1 marks

Answer: B

This question in 0654/13 May/June 2025