Question

From the top of a multi-storeyed building, 39.2 m
tall, a boy projects a stone vertically upwards with
an initial velocity of 9.8 ms - such that it finally
drops to the ground. (i) When will the stone reach
the ground ? (ii) When will it pass through the point
of projection ? (11) What will be its velocity before
striking the ground ?​

Answer 1

Answer:

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