Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Forces and Motion
367 practice questions
Topics covered
Practice questions
241–250 of 367
Question 241
4 marks · Normal
Answer and see the solution →A student investigates the effect of unbalanced force on the acceleration of a trolley, using the apparatus shown.
Trolley on a sloping ramp, pulled by a hanging mass over a pulley. (a)[2 marks]Describe how the student could measure the acceleration of the trolley in this experiment.
(b)[2 marks]The mass of the trolley and the hanging weights is 1.8 kg. If the total unbalanced force is 5.4 N, calculate the acceleration of the trolley.
Question 242
3 marks · Normal
Answer and see the solution →A sports car and a large van each experience the same unbalanced force when accelerating from rest. The mass of the van is four times larger than the mass of the car.
Use the relationship F = m × a to explain, in detail, which vehicle will have greater acceleration and why.
Question 243
4 marks · Hard
Answer and see the solution →A football goalkeeper of mass 80 kg dives to stop a ball and comes to a stop in 0.15 s after making contact with the ground. Just before contact, the goalkeeper's horizontal speed is 5.2 m/s.
(a)[2 marks]Calculate the horizontal acceleration of the goalkeeper as he comes to rest.
(b)[2 marks]Calculate the magnitude of the unbalanced force acting on the goalkeeper during this time.
Question 244
3 marks · Hard
Answer and see the solution →A company wants to design an emergency stopping system for lightweight drones. The system applies the same unbalanced force to drones of different masses to bring them to a stop in emergencies.
Explain, using the formula , why lighter drones can be stopped more quickly than heavier drones by the same force. In your answer, refer to how acceleration depends on mass.
Question 245
1 mark · Easy
Answer and see the solution →State what is meant by the stopping distance of a vehicle.
Question 246
2 marks · Easy
Answer and see the solution →Give two different factors that can increase the thinking distance of a driver.
Question 247
3 marks · Easy
Answer and see the solution →Describe how the condition of the tyres and the road surface affect the braking distance of a car. Explain your answer.
Question 248
2 marks · Easy
Answer and see the solution →A car is travelling at 60 mph. The thinking distance is 18 m and the braking distance is 55 m. Calculate the total stopping distance.
Question 249
2 marks · Easy
Answer and see the solution →State what is meant by the 'stopping distance' of a vehicle, and name its two components.
Question 250
3 marks · Easy
Answer and see the solution →A driver is travelling at 30 mph in dry conditions. The thinking distance for this speed is 9 m and the braking distance is 14 m.
(a)[1 mark]Calculate the total stopping distance.
(b)[2 marks]If the driver’s reaction time increases (for example, because they are tired), explain what will happen to the stopping distance.