Calculate the kinetic energy of a car of mass 500kg moving with a velocity of 18 km/h. Find the
new kinetic energy if two passengers of mass 50 kg each sit in the car?
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Answer:
m = 500kg
v = 18km/hr = 5m/s
Now, K.E. = 1/2mv²
K.E.= 1/2(500)(5)
K.E.= 1250J
Now, m = 600kg as two passengers each of 50kg are also in the car.
So, new K.E.= 1/2(600)(5)
new K.E. = 1500J
Hope it helps you!!
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