A sailor pulls a 2000 kilogram boat 25 meters along the dock with a rope attached to the boat that makes a 45 degree angle with the dock. How much work is done by the sailor if he exerts a force of 4
A man is carrying cement blocks weighing 200 newtons up a ladder to a platform 7 meters above the ground He has been carrying 2 blocks per minute How much work is done in 10 minutes
Which of these changes as the momentum of an object changes