PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A cart moves along a straight track. Its acceleration for successive time intervals is given in the table.
Time interval (s): 0–3 3–7 7–11 11–15
Acceleration (m s⁻²): 2 0 –1.5 0
The cart has an initial velocity of 5 m s⁻¹ at t = 0 s.
(i) Calculate the velocity of the cart at the end of each time interval.
(ii) Find the displacement of the cart during each interval.
(iii) Determine the total displacement and the average velocity for the entire 15 s of motion.