First slide
Projection Under uniform Acceleration
Question

A boy playing on the roof of a 10 m high building throws a ball with a speed of 10 ms–1 at an angle of 300 with the horizontal. How far from the throwing point will the ball be at height of 10 m from the ground?

Moderate
Solution

Required range of projectile with

U = 10ms-1, θ= 300, R = U2sin2θ/g = 8.66 m

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