Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Forces and Motion
367 practice questions
Topics covered
Practice questions
361–367 of 367
Question 361
1 mark · Normal
Answer and check →Which of the following is a vector quantity?
- A.Distance
- B.Speed
- C.Displacement
- D.Time
Question 362
6 marks · Normal
Answer and see the solution →A car travels along a straight section of road. It accelerates from 10 m/s to 26 m/s in 4.0 s.
(a)[2 marks]Calculate the acceleration of the car.
(b)[2 marks]Calculate the distance travelled during the acceleration.
(c)[2 marks]Explain one reason why the driver needs to allow extra stopping distance if the road is wet.
Question 363
5 marks · Normal
Answer and see the solution →A trolley of mass 1.5 kg is pulled along a straight track by a constant force. The trolley accelerates from rest to a velocity of 2.8 m/s in 4.0 s. A student draws the velocity–time graph below for the motion:
Velocity–time graph for trolley (a)[2 marks]Calculate the acceleration of the trolley.
(b)[2 marks]Calculate the resultant (unbalanced) force on the trolley.
(c)[1 mark]State two differences between the information shown on a velocity–time graph and a distance–time graph.
Question 364
6 marks · Normal
Answer and see the solution →A lorry of mass 2000 kg accelerates uniformly from rest to a speed of 15 m/s in 10 s on a straight, level road. The lorry then continues at this speed for another 10 s.
(a)[2 marks]Calculate the average acceleration of the lorry during the first 10 s.
(b)[2 marks]Calculate the resultant force on the lorry during the first 10 s.
(c)[2 marks]Sketch a velocity–time graph for the motion of the lorry for the 20 s described. Label all relevant values on the axes.
Question 365
6 marks · Normal
Answer and see the solution →A van of mass 1200 kg is moving along a straight road. The driver notices a traffic jam ahead and comes to rest by applying the brakes. The van slows from 18 m/s to 0 m/s in 4.5 s.
(a)[1 mark]State the SI unit for acceleration.
(b)[2 marks]Calculate the acceleration of the van while braking. State whether this acceleration is positive or negative.
(c)[2 marks]Calculate the unbalanced (resultant) force acting on the van while braking.
(d)[1 mark]Explain why the van takes a longer distance to stop if the road is wet.
Question 366
6 marks · Normal
Answer and see the solution →You investigate how the extension of a metal spring varies with the force applied. The table shows your results.
Results from spring experiment Force/N Extension/cm 0.0 0.0 2.0 1.5 4.0 3.0 6.0 4.5 8.0 6.0 (a)[1 mark]State the SI unit for extension in this experiment.
(b)[2 marks]Plot a graph of force (vertical axis) against extension (horizontal axis). Draw the best-fit straight line and label axes with correct units.
(c)[2 marks]Explain why the graph is a straight line that passes through the origin.
(d)[1 mark]Describe what will happen if the force applied is increased well beyond 8.0 N.
Question 367
6 marks · Normal
Answer and see the solution →Two students investigate the motion of a toy car by rolling it down a slope. The distance travelled after release is recorded at several times. Their data is given below.
Toy car motion data Time/s Distance/m 0.0 0.00 0.5 0.18 1.0 0.52 1.5 0.98 2.0 1.60 2.5 2.30 (a)[2 marks]Plot a distance–time graph for the toy car using the data above. Label the axes with units.
(b)[2 marks]Use your graph to estimate the average speed of the car between t = 0 and t = 2.5 s. Show your working.
(c)[2 marks]Describe how you can tell from the graph whether the car was accelerating.