In a movie, a monster climbs to the top of a building 30 m above the ground and hurls a boulder downward with a speed of 25 m/s at an angle of 45° below the horizontal. how far from the base of the building does the boulder land?

22.27 m

Explanation:

initial velocity, u = 25 m/s

Angle of projection, θ = 45°

height, h = 30 m

Let t be the time taken to reach the ground.

use second equation of motion in vertical direction

t = 1.26 second

The horizontal distance = horizontal velocity x time

d = 25 Cos 45 x 1.26 = 22.27 m

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