Physics Quiz: Motion Graphs and Stopping
Distance
Q1. A cyclist is moving at constant speed of 12 m/s. At t = 0, the brakes are applied. The
speed–time graph is shown below:
speed / m/s
12
0
1
5
time / s
(a) State the speed of the cyclist at t = 0. .............................. [1]
(b) Suggest why the cyclist continues at constant speed for the first 1.0 s. ........ [1]
(c)(i) Calculate the deceleration of the cyclist between t = 1.0 s and t = 5.0 s. ... [2]
(c)(ii) Calculate the total distance travelled by the cyclist from t = 0 to t = 5.0 s. ... [3]
Q2. A car accelerates uniformly from rest to 25 m/s in 10 s.
(a) Calculate the acceleration. ........................................ [2]
(b) Calculate the distance travelled in this time. ...................... [2]