1. The problem statement, all variables and given/known data Bob can throw a 620g rock with a speed of 30m/s. He moves his hand forward .8m while doing so. a.) How much work does Bob do on the rock? b.) How much force, assumed to be constant, does Bob apply to the rock? c.) What is Bob's maximum power output as he throws the rock? 2. Relevant equations W = Fd P = W/t 3. The attempt at a solution For part a, I tried using W = Fd. I assumed F would be mg, but I think that the accelerating has to be factored in there somewhere as well. I got 4.861, but it was wrong.