Question

calculate the kinitic energy of a car of mass 750kg moving with a velocity of 54 km find the new kinitic energy of a car if passengers of mass 50 kg sit in the car​

Answer 1

Answer:

Calculate the kinetic energy of a car of mass 750 kg moving with a velocity of 54 kmh-1

= 54 x 5 18 ms-1 = 15 ms-1

∴ Kinetic energy, KE = 1 2 mv2

⇒ KE = 1 2 x 750 x (15)2 = 84375 J.