JEE Main Physics question

Physics Motion in a Straight Line JEE Main

A ball is dropped on a floor and bounces back to a height somewhat less than the original height. Which of the curves depicts its motion correctly?

(A)A sequence of sharp "V" shapes (straight-line descents and ascents) of equal height at every bounce
(B)A sequence of smooth, parabolic arcs, each shorter than the previous oneCorrect
(C)A single smooth parabolic arc only
(D)A sawtooth pattern with instantaneous vertical drops between bounces

Answer: (B)

Solution

Between bounces the ball is in free fall/rise under gravity, so each arc of the height–time graph must be a **parabola** (quadratic in ), never a straight-line "V". Since real

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Question ID VK-152002