Question

From the top of a building 200 m high, a ball is thrown horizontally which hits the ground at a distance. The line joining the top of the building to the point where the ball hits the ground makes an angle of 45° with the horizontal. Then initial velocity of the ball is

Answer 1

Answer:

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Answer 2

Answer:

Correct option is C)

Given Range =80 m

In vertical direction :

s=ut+

2

1

at

2

⇒−80=0+

2

1

×(−10)t

2

⇒t=4 sec

In horizontal direction :

υ=

t

range

=

4

80

m/s=20 m/s