A hockey player shoots a 160g puck with a force of 400N over a distance of 10cm. How much work did the player do on the puck? If the puck starts from rest, what will its velocity be when the player shoots the puck?

Hulky and Bulky are two workers being considered for a job at the UPS loading dock. Hulky boasts that he can lift a 100 kg box 2.0 meters vertically, in 3.0 seconds. Bulky counters with his claim of lifting a 200 kg box 5.0 meters vertically, in 20 seconds. Which worker has a greater power rating?