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The displacement of a body at any time t...

The displacement of a body at any time `t` after starting is given by `s=15t-0.4t^(2)`. The velocity of the body will be `7ms^(-1)` after time `:`

A

`20s`

B

`15s`

C

`10s`

D

`5s`

Text Solution

Verified by Experts

The correct Answer is:
C
`(C^(**))10s`
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