A 0.70 kg rubber ball has a speed of 2.0 m/s at point A and kinetic energy of 6.5 J at point B.?

Question

The ball's kinetic energy at A:
1.4J
The ball's speed at B:
4.31m/s

Determine the total work done on the ball as it moves from A to B.

Answer 1

The kinetic energy of the ball is increased from 1.4 J to 6.5J by the work done on it.

The gain in kinetic energy is 6.5 - 1.4 = 5.1 J

Work done on the ball = gain in kinetic energy = 5.1 J.

Answer 2

I think u should add 1.4-point A and 6.5-point B

Answer 3

ya vas siempre de loco vos