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Physics-
General
Easy
Question
A particle is projected from the ground with an initial velocity of at an angle of 60 with horizontal. From what height should an another particle be projected horizontally with velocity so that both the particles collide in ground at point if both are projected simultaneously?
10 m
30 m
15 m
25 m
The correct answer is: 15 m
Horizontal component of velocity of is 10 or which is equal to the velocity of in horizontal direction. They will collide at if time of flight of the particles are equal or