Question

A person sitting in the rear end of the compartment throws a ball towards the front end.The ball follows a parabolic path.The train is moving with velocity of $20m/s$.A person standing outside on the ground also observes the ball.How will the maximum heights $y_m$ attained and the ranges $R$ seen by the thrower and the outside observer compare with each other?

• A. same $y_m$ different $R$
• B. same $y_m$ and $R$
• C. differently $y_m$ same $R$
• D. differently $y_m$ and $R$

Answer 1

Answer: (A)

same $y_m$ different $R$

The motion of train will affect only the horizontal component of the velocity of the ball.Since , vertical component is same for both observers, the $y_m$ will be same ,but range R will be different.