Question

A man in a balloon, throws a stone downwards with speed of 5 m/s with tespect ot balloon. The balloon is moving upwards with a constant acceleration of $5m/s^2$ . Then velocity of the stone relative to the man after 2 second is

• A. 10 m/s
• B. 30 m/s
• C. 15 m/s
• D. 35 m/s

Answer 1

The correct option is D

35 m/s

Relative initial velocity, $u=5m/s$
Relative acceleration, $a=5+10=15m/s^2$
Now, $v=u+at=5+15\times 2=35m/s$