Question

A body projected vertically up has a displacement of 20 m in the first 'n' seconds while it was moving up. Find its magnitude of displacement in the last 'n' seconds while falling down.

• A. 40 m
• B. 10 m
• C. 20 m
• D. 30 m

Answer 1

The correct option is C 20 m

Distance covered by a body thrown vertically upwards in first $n$ seconds in its ascent is equal to the distance covered by same body in last $n$ seconds in its descent if it is dropped from its maximum height.

Thus distance covered by the body in first n seconds while falling down is $20m$