i need help with this

1.The difference between work and power is that: a) An object must move for work to be done, but not for power to be exerted Work is always larger than power b) Time is not important to determine the work done, but it is for the power exerted c) They are exactly the same thing 2. At which point would a skateboarder have the most kinetic energy? a) At rest at the top of a half-pipe, just before gliding down the ramp. b) At the very bottom of the half-pipe, after gliding down. c) On his way back up the far side of the half-pipe d) His kinetic energy would be the same everywhere 3. What is FALSE about the binder(972 g) and the calculator(241 g) sitting on your desk? a) Both have the same amount of gravitation potential energy. b) Both have the same amount of kinetic energy. c) If they fall off the desk, both with hit the floor at the same speed. d) B and C are both False 4. Melika used 686 N of force to hold her body in the bottom ofa push-up position 25 cm above the ground, for 30 seconds. How much work did Melika do? a) 5.7J b) 170J c) 17000] d) None 5. Which unit below is NOT a possible unit for power? a) W b) Nm/s c) J/min d) N/s