1. (a) Define power. (b) Define a watt. (c) Two motors do the same amount of work but one takes twice long as the other. Compare the power of the motors. 2. What is the power of a motor that does 700 J of work in 35 s? 3. How long will it take a 500-W motor to raise the 1000-N hammer of a pile driver 10 m? 4. A boy applies a steady force of 32 N to a cart and pushes it 12 m in 16 s. What is his power? 5. A 60.0-kg woman climbs a staircase to a level 1 1.0 m above her starting point in 66.0 s. (a) How much force does she exert in raising herself from step to step? (b) How much work does she do in getting to the higher level? (c) What is her power