(a) You bring a boat toward the dock by pulling on a rope with a force of 130 newtons through a distance of 7 meters. How much work do you do? (b) Next you slow the boat down by pushing against it...

(a) You bring a boat toward the dock by pulling on a rope with a force of 130 newtons through a distance of 7 meters.

How much work do you do?

(b) Next you slow the boat down by pushing against it with a force of 40 newtons, opposite to the boat's movement of 5