Question

The velocity of a car increase from
54 km/hr to 72 km/hr. How much is
the work done if the mass of the car
is 1500 kg ?​

Answer 1

Answer:

Explanation: m= 1500 kg , v = 72 km/hr = 20 m/s

U = 54 km/hr = 15 m/s

K.E. = 1/2 m ( v² - u²)

1/2 X 1500 ( 20² - 15²)

= 13125 j