Question

a car wiegh 20000 N climbs up the hill at speed 8m/s gaining a height pf 120 m im 100s calculate the work done of the engine ,power of engine by car

Answer 1

hey ..

weight = 20000N
height = 120m
time =100 sec

now,, here height is the displacement
so work done = mgh ( potential )
= 20000×9.8×120
= 23520000 joule


now power = work ÷ time
= 23520000÷100
= 235200 watt

theirfore,, work = 23520000j
and power= 235200 watt

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