Question

117. A body is thrown up with a velocity 30ms.
At same time another body is dropped from
a height of 30m. Their relative acceleration
after 0.8 seconds is
(1) 4g
(2) zero
(3) 2g
(4) g/2​

Answer 1

A body is thrown up with a velocity 30m/s. at same time another body is dropped from a height of 30m. their relative acceleration after 0.8 second is ...

• (1)4g
• (2) zero
• (3) 2g
• (4) g/2

answer : option (2) zero

explanation : both bodies are moving under gravity. means, acceleration acting on each body is equal to acceleration due to gravity. i.e., g.

so, relative acceleration = g - g = 0

hence, relative acceleration of bodies after 0.8 second is zero.