Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Forces and Motion
367 practice questions
Topics covered
Practice questions
71–80 of 181 · Normal
Question 71
2 marks · Normal
Answer and see the solution →What does the area under a velocity–time graph represent? Give an example of how you could find it for an object moving at constant velocity.
Question 72
4 marks · Normal
Answer and see the solution →A small parcel falls from rest from a hot air balloon. The balloon is at a height of 180 m above the ground. Assume the acceleration due to gravity is 10 m/s² and air resistance is negligible.
(a)[3 marks]Calculate the speed of the parcel just before it hits the ground.
(b)[1 mark]State the value of the initial velocity of the parcel.
Question 73
3 marks · Normal
Answer and see the solution →A racing cyclist travels at an initial speed of 5 m/s and accelerates at 2 m/s² along a straight track. Find the distance the cyclist covers while increasing speed to 17 m/s. Show all your working.
Question 74
1 mark · Normal
Answer and check →Which equation should you use to calculate the final speed for a car accelerating from an initial velocity u over a distance s at constant acceleration a?
- A.v^2 = u^2 + 2as
- B.v = (u + s) / 2
- C.a = (v - u) / t
- D.s = ut + 0.5at^2
Question 75
3 marks · Normal
Answer and see the solution →A tennis ball is thrown vertically upwards with an initial speed of 18 m/s. It decelerates at 10 m/s² due to gravity until it stops momentarily at its highest point.
Explain, using the suvat equation, how you would calculate the maximum height reached by the ball.
Question 76
4 marks · Normal
Answer and see the solution →A student investigates the motion of a toy trolley moving along a straight track. She records the following data:
Time / s Speed / m/s 0.0 0.0 1.0 0.7 2.0 1.4 3.0 2.1 4.0 2.8 (a)[2 marks]Calculate the trolley's acceleration from the data.
(b)[2 marks]Suggest a reason why the acceleration might not be exactly constant in a real experiment.
Question 77
3 marks · Normal
Answer and see the solution →A football is kicked along a flat field so it travels in a straight line from rest and comes to a stop again. Its initial velocity is 0 m/s; it accelerates uniformly to reach 12 m/s, moves at that speed for a while, then slows uniformly to rest. The acceleration and deceleration are both 4 m/s².
(a)[2 marks]Calculate the time it takes for the football to accelerate from rest up to its top speed.
(b)[1 mark]How far does the football travel while accelerating to top speed?
Question 78
2 marks · Normal
Answer and see the solution →State the meaning of each term in the formula v^2 = u^2 + 2as.
Question 79
3 marks · Normal
Answer and see the solution →A train increases its speed from 20 m/s to 50 m/s under uniform acceleration of 6 m/s². Calculate the distance over which this acceleration occurs.
Question 80
4 marks · Normal
Answer and see the solution →A student investigates the motion of a remote-controlled car along a straight runway. The car accelerates uniformly from rest. The student records the following data:
Car motion data Distance travelled (s) / m Final speed (v) / m/s 0.0 0.0 1.5 3.9 4.0 6.7 7.0 9.2 (a)[3 marks]Using the data for s = 7.0 m, calculate the car’s acceleration.
(b)[1 mark]State the initial speed of the car for this experiment.