A ball is dropped vertically downwards from a height 𝑑 above the ground. It hits the ground and bounces up vertically to a height 𝑑/2. Neglecting subsequent motion and air resistance, its speed varies with the height ℎ above the ground as

Question : A ball is dropped vertically downwards from a height 𝑑 above the ground. It hits the ground and bounces up vertically to a height 𝑑/2. Neglecting subsequent motion and air resistance, its speed varies with the height ℎ above the ground as

(A)

(B)

(C)

(D)

Answer : option (B)

Solution :

A ball is dropped vertically downwards from a height 𝑑 above the ground. It hits the ground and bounces up vertically to a height 𝑑/2. Neglecting subsequent motion and air resistance, its speed varies with the height ℎ above the ground as
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