A person throws a 0. 5 kg ball up in the air in 1. 1 s. During this process the position of the ball changes from 0. 5 m to 1. 5 m (before being released) and the speed of the ball changes from 0 m/s to 7 m/s. What is the work done (in J) by the person on the ball while the ball is being thrown?
