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The velocity of a block of mass 2kg movi...

The velocity of a block of mass `2kg` moving along `x-` axis at any time `t` is givne by `v=20-10t(m//s)` where `t` is in seconds and `v` is in `m//s`. At time `t=0`, the block is moving in positive `x-` direction.
The Kinetic energy of block at `t=3 sec.` is `:`

A

`50J`

B

`100J`

C

`200J`

D

`300J`

Text Solution

Verified by Experts

The correct Answer is:
B
From solution of `37 K_(f)=100J Ans.`
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