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Q.

The velocity ‘v’ reached by a car of mass ‘m’ on moving a certain distance from the starting point when driven by a motor with constant power ‘P’ is such that

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a

v∝3Pm

b

v2∝3Pm

c

v3∝3Pm

d

v∝3Pm2

answer is C.

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Detailed Solution

P=F.v; P=mv2dvds ; ∫v2dv=∫Pmds
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