Question

Three speed-time graphs are given below:
Which graph represents the case of:
(i) a cricket ball thrown vertically upwards and returning to the hands of the thrower?
(ii) a trolley decelerating to a constant speed and then accelerating uniformly?

Answer 1

(a) Graph C shows a cricket ball thrown vertically upwards and decreases its velocity. At maximum height, its velocity is zero. When returning to the hands of the thrower its velocity increases.
(b) Graph A shows a trolley decelerating to a constant speed and then accelerating uniformly.