Question

One stone is projected horizontally from a 20 m high
cliff with an initial speed of 10 ms. A second stone is
simultaneously dropped from that cliff. Which of the
following is true?
(A) Both strike the ground with the same speed.
(B) The ball with initial speed 10 ms- reaches the
ground first.
(C) Both the balls hit the ground at the same time.
(D) Both strike the ground with different speed​

Answer 1

Answer:(c) and (D)

Explanation:

Vertical component of velocity in both cases is equals to zero.

Time taken by both particles to travel same height is same.

first particle has a velocity in horizontal and vertical direction in both and second particle has velocity only in vertical direction. So velocity of hit will be different in both cases.