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A car drives along a straight level fric...

A car drives along a straight level frictionless road by an engine delivering constant power. Then velocity is directly proportional to

A

(a) `sqrtt`

B

(b) `1/sqrtt`

C

(c) `sqrtt`

D

(d) None of the above

Text Solution

Verified by Experts

The correct Answer is:
C
`P=Fv=m(dv)/(dt)v`
Hence, `vdv=P/mdt`
On integration, we find `vpropsqrtt`
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