Question

A small body is dropped from a rising balloon. A person $A$ stands on ground, while another person ${}^{\prime }{B}^{\prime }$ is on the balloon. Choose the correct statement: Immediately, after the body is released.

• A. $A$ and $B$, both feel that the body is going up.
• B. $A$ and $B$, both feel that the body is coming (going) down.
• C. $A$ feels that the body is coming down, while $B$ feels that the body is going up.
• D. $A$ feels that the body is going up, while $B$ feels that the body is going down.

Answer 1

The correct option is A $A$ and $B$, both feel that the body is going up.

When the body is dropped from the balloon, it also acquires the upward velocity of balloon. So w.r.t. a person on the ground, the ball appears to be going up. But a person in the balloon is also going up. So w.r.t. him, velocity of body will be zero and he will then see the body to be coming down.