A ball is thrown in air with velocity 10 m per second making an angle of 30 degree with x- axis. The ball reaches the ground in 10 sec. The angle on striking the ground is?
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Explanation:
vy = 10sin30 - 100
vx = 10cos30
let The angle on striking the ground be ∝
tan∝ = vy /vx = 10sin30 - 100 ÷ 10cos30 = -9.5 ÷√3/2 = - 19/√3
∝ = 95.21°
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