Question

A child travelling in a train throws a ball outside with a speed $v$. According to a child who is standing on the ground, the speed of the ball is

• A. same as v
• B. greater than v
• C. less than v
• D. None of these

Answer 1

Answer: (B)

greater than v

Answer 2

Since, the child throws the ball with a speed $v$ from a moving train, so the speed of the ball with respect to the ground is more than $v$.