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A stone is projectef from level ground s...

A stone is projectef from level ground such that its horizontal and vertical components of initial velocity are `u_x=10(m)/(s)` and `u_y=20(m)/(s)` respectively. Then the angle between velocity vector of stone one second before and one second after it attains maximum height is:

A

`30^@`

B

`45^@`

C

`60^@`

D

`90^@`

Text Solution

Verified by Experts

The correct Answer is:
D
It is obvious from the figure shown that the angle between the velocity
vectors 1 sec before and 1 sec after it attains maximum
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