Question

Calculate the kinetic energy of a car of mass 500kg moving with a velocity of 18km/hr find the new ke if two passengers of mass 50kg each sit in the car

Answer 1

kinetic energy is equal to half MV square therefore KE=½(500+50*2)(18)²

Answer 2

KE=1/2mv^2

KE=1/2{500(18)^2}