A car of weight W is on an inclined road that rises by 100 m over a distance of 1 km and applies a constant frictional force … on the car. While moving uphill on the road at a speed of 10 ms^−1, the car needs power P. If it needs power … while moving downhill at speed v then value of … is :

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Work Power and Energy

JEE Main 2016 · 9 Apr, Morning shift · Q8602

PhysicsHard70×since 2002Q8602

A car of weight W is on an inclined road that rises by 100 m over a distance of 1 km and applies a constant frictional force

{W \over 20}

on the car. While moving uphill on the road at a speed of 10 ms^−1, the car needs power P. If it needs power

{p \over 2}

while moving downhill at speed v then value of

\upsilon

is :