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The time taken by a block of wood (initi...

The time taken by a block of wood (initially at rest) to slide down a smooth inclined plane 9.8 m long (angle of inclination is `30^(@)`) is

A

`(1)/(2)s`

B

2 s

C

4 s

D

1 s

Text Solution

Verified by Experts

The correct Answer is:
B
For one dimensional motion along a plane
`S=ut+(1)/(2)at^(2) rArr 9.8=0 +(1)/(2)g sin 30^(@)t^(2)rArr t=2s`
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