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26/10/2021 6:16 pm
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Three speed-time graphs are given below:
Which graph represents the case of:
(i) a cricket ball is thrown vertically upwards and returning to the hands of the thrower?
(ii) a trolley decelerating to a constant speed and then accelerating uniformly?
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26/10/2021 6:17 pm
(i) Graph (c): The speed of the ball goes on decreasing uniformly as it moves upward, reaches zero at the highest point, and then increases uniformly as it moves downward.
(ii) Graph (a): The speed of the trolley decreases uniformly, then it moves at a constant speed, and then the speed increases uniformly.