Problem: A factory worker pushes a 31.4 kg crate a distance of 5.00 m along a level floor by pushing downward at an angle of 28.0degrees below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.260. The Crate is Pushed with a Constant Velocity.

Part A: What magnitude of force must the worker apply to move the crate at constant velocity?

Part B: How much work is done on the crate by the worker's pushing force when the crate is pushed a distance of 5.00 m?

Part C: How much work is done on the crate by the force of friction during this displacement?

Rework your solution from the beginning and check each step carefully.