1.

A bpdy is released from top or a tower of height h m. after 2s it is stopped and then instantaneously released

Answer»

ATQ u=0

Since, s = UT + 1/2 at^2
Therefore,
h = (0) × 2 + 1/2 × 10 × 2 × 2
h = 10 × 2
h = 20 METRE



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