Question

A man on a moving cart, facing the direction of motion throws a ball straight up with respect to himself. Which of the following statements is(are) correct?

• A. The ball will always return to him
• B. The ball will never return to him.
• C. The ball will return to him if the cart moves with a constant velocity.
• D. The ball will fall behind him if the cart moves with some acceleration.

Answer 1

Answer: (C), (D)

The correct options are
C The ball will return to him if the cart moves with a constant velocity.
D The ball will fall behind him if the cart moves with some acceleration.

The ball will return to him if the cart moves with a constant velocity because the ball will travel same amount of distance as the cart in between the time interval when it moves up and returns to same horizontal level. But it will fall behind if cart has acceleration because then the amount of distance moved by the cart will be more.