lauryn serves a volleyball with a mass of of 2.1 kg the ball leaves her hand with a speed of 30m/s find the energy of the ball

m = mass of the volleyball = 21. kg

v = speed of the volleyball as it leaves her hand = 30 m/s

KE = kinetic energy of the volleyball

kinetic energy of the volleyball is given by the formula

KE = (0.5) m v²

inserting the above values in the formula

KE = (0.5) (2.1) (30) ²

KE = (0.5) (2.1) (900)

KE = (0.5) (1890)

KE = 945 Joules

hence the energy of the volleyball comes out to be 945 Joules