The displacement of a ball rolling on a straight track was measured at equal time…
PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
The displacement of a ball rolling on a straight track was measured at equal time intervals as shown in the table.
Time t (s): 0, 2, 4, 6
Displacement x (m): 0, 3, 7, 12
(i) Plot a displacement–time graph for the motion, taking suitable scales.
(ii) From the graph or otherwise, calculate the average velocity of the ball between t=2s and t=6s.
(iii) Find the total distance travelled and the average speed of the ball for the entire 6 s interval.
(iv) Is the numerical value of average velocity equal to that of average speed in this case? Give reason for your answer.