1. A supply worker pulls a cart of building materials across a warehouse floor at a constant velocity with a horizontal force of magnitude 98N. How much work is done by pulling the cart 33 m in the direction of the applied force? Write your answer in kilojoules.
2. 1500N of force is applied to a chain lift that pulls a train of roller coaster cars up a lift hill. The lift hill is 87 meters tall and the chain runs along the length of the hill. How much work is done to get the train to the top of the hill? Write your answer in kilojoules.
3. An airline passenger drags a rolling suitcase with 90N of force. Her suitcase’s angle with the floor is 45o and she pulls it a distance of 70 meters from her car to the bag drop area. How much work did she do? Write your answer in kilojoules.