1. A pitcher throws a ball at 70 mph and the catcher stops it in their glove. (a) Is the work done on the ball by the pitcher positive, negative, or zero? (b) Is the work done on the ball by the catcher positive, negative, or zero?2. You apply a force of 82.0 N to a crate over a distance of3.00 m.a. Find the work you do on the crate.b. Find the work done by the normal force on the crate. Explain.