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/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/2 while moving downhill at speed v then value of is:

Work, Energy and Power: JEE Main 2016 Physics question

JEE Main 2016 · 9 Apr, Morning shift · Q8602

JEE Main 20169 Apr, Morning shiftPhysicsHardWork, Energy and Power70× since 2002

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 :

JEE Main 2016 Work, Energy and Power Question with Solution (9 Apr Morning shift, Q8602) | JEE Arc