what is the work done increase velocity of a car from 36 kilometre per hour to 72 kilometre per hour if the mass is 1500 kg
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4
Answer
m = 1500 kg
u = 36 km h⁻¹ = 10 m s⁻¹
v = 72 km h⁻¹ = 20 m s⁻¹
W = ?
Work done = Change in kinetic energy
= 1/2 m (v² - u²)
= 1/2 x 1500 x (20² - 10²)
= 225000 J
Answered by
2
Answer
m = 1500 kg
u = 36 km h⁻¹ = 10 m s⁻¹
v = 72 km h⁻¹ = 20 m s⁻¹
W = ?
Work done = Change in kinetic energy
= 1/2 m (v² - u²)
= 1/2 x 1500 x (20² - 10²)
= 225000 J
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