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 20 m/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) Different y_m same R 

(d) Different y_m and R

Answer 1

Correct option  (a) Same y_m different R

Explanation:

The motion of the 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 R will be different.