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A stone is projected from level ground a...

A stone is projected from level ground at `t=0` sec such that its horizontal and vertical components of initial velocity are `10(m)/(s)` and `20(m)/(s)` respectively. Then the instant of time at which tangential and normal components of acceleration of stone are same is: (neglect air resistance)`g=10(m)/(s^2)`.

A

`10hati + 10sqrt(3) hatj`

B

`30hati + 30sqrt(5) hatj`

C

`30sqrt(3)hati + 30 hatj`

D

`30sqrt(3) hati`

Text Solution

Verified by Experts

The correct Answer is:
C
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