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A ball is rolled off the edge of a horizontal table at a speed of 4 m/s. It hits the ground after 0.4 s. Then find

1)horizontal distance covered by ball from table

2) height of table

Q2 A bomber plane move horizontally with a speed 500 m/s and a bomb released from it, strike the ground in 10 sec. Angle of velocity vector with horizontal at which it strikes the ground

Answer is tan-1(1/5)

Q3 The speed of projectile at the highest point become 1/root 2times its initial speed

The horizontal range of the projectile will be (if initial velocity is u)

Answer is u square over get

Q4 A cricketer can throw a ball to a maximum horizontal distance of 100 m.with same effort, he throws the ball vertical upward. The maximum height attained by ball is

Answer is 80m

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