1. A 45-kg crate is pulled 35 m along a horizontal floor by a constant force exerted by a person, F=115N, which acts at a 32 angle. The coefficient of friction is 0.15. Determine the work done on the crate by each force, and the total work done on the crate.
2. Explain whether Positive, negative, or no work is being done on a suitcase when you:
3. (a) pick it up from the floor.
4. (b) carry it at a steady speed on a level street to the bus stop.
5. (c) hold it above the ground while you wait for the bus.
6. (d) Placing it back on the floor.