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Edexcel IGCSE Physics

Topic questions Forces Forces & braking

Forces & braking

6 questions · 63 marks · about 1 hour

Forces and braking questions

TopicForces & braking

Edexcel 4PH1 Forces and braking 6 questions

Physics Paper 1 June 2025 (R), Question 1 5 marks

The diagram shows a truck travelling along a horizontal road.

Figure for question 1
(a)

The diagram shows the horizontal forces acting on the truck.

Give the resultant horizontal force acting on the truck.

[1]
(b)

The driver of the truck has to stop because a tree has fallen on the road.

(b)(i)

The thinking distance of the driver is 7 m.

The braking distance of the truck is 20 m.

Calculate the stopping distance of the truck.

[1]
Reveal mark scheme Mark scheme for question 1(b)(i)
(b)(ii)

Give two factors that would affect the braking distance of the truck.

[2]
Reveal mark scheme Mark scheme for question 1(b)(ii)
(b)(iii)

Which of these factors would decrease the driver’s thinking distance?

Question 1, shown as an image
[1]
Reveal mark scheme Mark scheme for question 1(b)(iii)

Physics Paper 1 January 2023, Question 5 13 marks

The graph shows how the thinking distance and the braking distance vary with the speed of a car.

Figure for question 5
(a)

Which of these does not affect thinking distance?

Question 5, shown as an image
[1]
Reveal mark scheme Mark scheme for question 5(a)
(b)

Which of these would increase the braking distance of the car?

Question 5, shown as an image
[1]
Reveal mark scheme Mark scheme for question 5(b)
(c)

Determine the stopping distance of the car when the speed of the car is 20 m / s.

[3]
Reveal mark scheme Mark scheme for question 5(c)
(d)(i)

State the formula linking average speed, distance moved and time taken.

[1]
Reveal mark scheme Mark scheme for question 5(d)(i)
(d)(ii)

Determine the reaction time of the driver of the car.

[3]
Reveal mark scheme Mark scheme for question 5(d)(ii)
(e)

Calculate the mean braking acceleration of the car as it brakes to a stop from an initial speed of 30 m / s.

acceleration =........ m / s2

[4]
Reveal mark scheme Mark scheme for question 5(e)

Physics Paper 1 January 2022, Question 5 9 marks

A driver of a car sees an obstruction in the road ahead and must stop the car.

(a)(i)

State the formula linking average speed, distance travelled and time taken.

[1]
Reveal mark scheme Mark scheme for question 5(a)(i)
(a)(ii)

A car travels at 21 m / s.

The driver’s reaction time is 0.14 seconds.

Calculate the distance travelled by the car during the driver’s reaction time.

[2]
Reveal mark scheme Mark scheme for question 5(a)(ii)
(b)

The car experiences a braking force of 7600 N.

The car has a mass of 1200 kg.

(b)(i)

State the formula linking force, mass and acceleration.

[1]
Reveal mark scheme Mark scheme for question 5(b)(i)
(b)(ii)

Calculate the acceleration of the car.

acceleration =........ m / s2

[2]
Reveal mark scheme Mark scheme for question 5(b)(ii)
(b)(iii)

Calculate the braking distance travelled as the speed of the car is reduced from 21 m / s to 0 m / s.

[3]
Reveal mark scheme Mark scheme for question 5(b)(iii)

Physics Paper 1 November 2020 (R), Question 11 9 marks

The graph shows how the thinking distance and braking distance of a car vary with its initial speed.

80

Figure for question 11
(a)

A car has an initial speed of 35 m/s.

The brakes are applied and the car comes to a complete stop in the braking distance shown by the graph.

Calculate the mean braking acceleration of the car.

[4]
Reveal mark scheme Mark scheme for question 11(a)
(b)

Evaluate how the thinking distance and the braking distance vary for different values of initial speed.

Refer to information from the graph in your answer.

[5]
Reveal mark scheme Mark scheme for question 11(b)

Physics Paper 1 June 2019, Question 4 12 marks

Question 4, shown as an image
Question 4, shown as an image
Question 4, shown as an image
(a)
(a)(i)
(a) Question 4, shown as an image
[1]
Reveal mark scheme Mark scheme for question 4(a)(i)
(a)(ii)
Question 4, shown as an image
Question 4, shown as an image
[4]
Reveal mark scheme Mark scheme for question 4(a)(ii)
(a)(iii)
Question 4, shown as an image
[3]
Reveal mark scheme Mark scheme for question 4(a)(iii)
(b)
Question 4, shown as an image
[4]
Reveal mark scheme Mark scheme for question 4(b)

Physics Paper 1 June 2019 (R), Question 10 15 marks

(a)

Diagram 1 shows a van accelerating along a horizontal road.

The horizontal forces acting on the van are shown.

Figure for question 10
(a)(i)

Force X opposes the motion of the van.

State the name of force X.

[1]
Reveal mark scheme Mark scheme for question 10(a)(i)
(a)(ii)

The resultant force acting on the van is 1500 N.

Calculate the magnitude of force X.

[assume X is the only horizontal force opposing the motion of the van]

[1]
(b)

Diagram 2 shows the resultant force acting on the van when it brakes.

Figure for question 10
(b)(i)

State the formula linking resultant force, mass and acceleration.

[1]
Reveal mark scheme Mark scheme for question 10(b)(i)
(b)(ii)

The mass of the van is 1900 kg.

Calculate the acceleration of the van when it brakes.

Give the unit.

[3]
Reveal mark scheme Mark scheme for question 10(b)(ii)
(b)(iii)

The van was travelling at an initial speed of 18 m/s before braking and coming to rest.

Calculate the distance travelled by the van while it is braking.

[assume that the acceleration remains constant]

[3]
Reveal mark scheme Mark scheme for question 10(b)(iii)
(b)(iv)

Describe two factors that would increase the braking distance.

[2]
Reveal mark scheme Mark scheme for question 10(b)(iv)
(c)

When the van is fully loaded its mass increases to 2500 kg.

Calculate the time taken to bring the fully loaded van to rest when it is travelling at an initial speed of 18 m/s.

[assume that the resultant force during braking remains at 14 kN]

[4]
Reveal mark scheme Mark scheme for question 10(c)

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