A ball is thrown from rear end of the compartment of train to the… - Vidyadip

MCQ

A ball is thrown from rear end of the compartment of train to the front end which is moving at a constant horizontal velocity. An observer $A$ sitting in compartment and another observer $B$ standing on the ground draw the trajectory. They will have:

A
Equal horizontal and equal vertical ranges.
✓
Equal vertical ranges but different horizontal ranges.
C
Different vertical ranges but equal horizontal ranges.
D
Different vertical ranges and different horizontal ranges.

✓

Answer

Correct option: B.

Equal vertical ranges but different horizontal ranges.

In vertical direction, ball has zero initial velocity but same value of $g$ w.r.t observer $A\ \&\ B$,
so they will draw trajectory of equal vertical range But along horizontal direction, for observer $A,$ ball is moving with velocity at which it is thrown w.r.t. train while for $B$, it is moving with a velocity equal to train $+$ velocity at which it is thrown w.r.t groundtrain.

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