Question

From the top of a tower 19.6 m high a ball is thrown horizontally if the line joining the point of projection to the point where it hits the ground make an angle of 45 with the horizontal initial velocity of Ball is

Answer 1

Answer:

Horizontal speed = 9.8 m/s

Explanation:

From the top of a tower 19.6 m high a ball is thrown horizontally if the line joining the point of projection to the point where it hits the ground make an angle of 45 with the horizontal initial velocity of Ball is

the point of projection to the point where it hits the ground = 45°

=> Tan 45° = Tower Height / Horizontal Distance Covered

=> 1 = 19.6 / Horizontal Distance Covered

=> Horizontal Distance Covered = 19.6 m

Vertical Distance Covered = 19.6 m

S = ut + (1/2)at²

S = 19.6  u = 0  ( thrown horizontally so no vertical speed at initial)

a = g   = 9.8 m/s²

=> 19.6 = 0 + (1/2)(9.8) t²

=> t² = 4

=> t = 2

Horizontal Distance = Horizontal speed * Time

=> 19.6 = Horizontal speed * 2

=> Horizontal speed = 9.8 m/s

Answer 2

Refer The Attachment ⬆️

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Hope It Helps You ✌️