a 0.67 kg rubber ball has a speed of 2.2 m/s at point a and kinetic energy 7.1 J at point B find the total work done on the ball as it moves from a to b

Answer 1

W=KE2-KE1=KE2 - mv²/2=
=7.14 - 0.67•2.2²/2 = 5.52 J