Question

A large rectangular box falls vertically with an acceleration a. A toy gun fixed at A and aimed towards O fires a particle P. Which of the following is false

• A. P will hit C if a = g
• B. P will hit the roof BC if a > g
• C. P will hit the wall CD if a < g
• D. may be either (a), (b) or (c), depending on the projection speed of P

Answer 1

The correct option is D may be either (a), (b) or (c), depending on the projection speed of P

Given,

Box falling downward, acceleration of $a$ will act upward and gravity $g$ act downward.

Deflection in projection depend only on these acceleration difference, not on speed.

Hence, may be either (a), (b) or (c), depending on the projection speed of P is wrong.