Answer to Question #84731 in Mechanics | Relativity for Dantrell

Question

what is the total energy of the 0.15kg tennis ball right when serena hits it if it starts at 1.4 meters and travels upward at 35.0 m/s?

Answer 1

Calculate the total energy of the ball by the relation as follows:

E=(mV^2)/2+mgh

Here m is the mass of the ball, V is the velocity of the ball and h is the elevated height of ball and g is the gravitational acceleration of the ball.

E=((0.15 kg) (35 m/s)^2)/2+(0.15 kg)(9.81 m/s^2 )(1.4 m)

E=91.875+2.0601

E=93.93 joule