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A bullet is projected upwards from the t...

A bullet is projected upwards from the top of a tower of height 90 m with the velocity `30 ms^(-1)` making an angle `30^(@)` with the horizontal. Find the time taken by it to reach the ground is `(g=10 ms^(-2))`

A

2s

B

3s

C

24s

D

6s

Text Solution

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The correct Answer is:
D
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A bullet is projected upwards from the top of a tower of height 90 m with the velocity 30 ms^(-1) making an angle 30° with the horizontal. The time taken by it to reach the ground is (g=10 ms^(-2) )

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