A car of weight 20000 N climbs up a hill at a steady speed of 8 m/s, gaining height of 120 m in 100 s. Calculate:
Work done by the car
power of car engine

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Solution

Given that,
mg = 20000N
m = 2000 kg
g = 10m/s²
t =100s
h = 120m
Work done by the car, W = Increased energy of the car
= mgh = 20000* 120 =2.410⁶J
Power of engine
P = W/t
= 2.410⁶J / (100s)
= 2.4*10⁴W

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A car of weight 20000 N climbs up a hill at a steady speed of 8 m/s, gaining height of 120 m in 100 s. Calculate:Work done by the carpower of car engine

Given that,mg = 20000Nm = 2000 kgg = 10m/s2t =100sh = 120m Work done by the car, W = Increased energy of the car= mgh = 20000* 120 =2.4*106JPower of engineP = W/t= 2.4*106J / (100s)= 2.4*104W

A car of weight 20000 N climbs up a hill at a steady speed of 8 m/s, gaining height of 120 m in 100 s. Calculate:
Work done by the car
power of car engine

Given that,
mg = 20000N
m = 2000 kg
g = 10m/s²
t =100s
h = 120m
Work done by the car, W = Increased energy of the car
= mgh = 20000* 120 =2.410⁶J
Power of engine
P = W/t
= 2.410⁶J / (100s)
= 2.4*10⁴W