Which of the following would have the highest power rating? 500 j of energy used in 100 seconds 1,000 j of energy used in 100 seconds 500 j of energy used in 50 seconds 1,000 j of energy used in 50 seconds

Power is defined as the work produced per unit of time. The SI unit for power is the watt, which is also equivalent to Joules per second. Given the data above, the power can be directly calculated by dividing the work (joule) by the time (second). The one that gives the highest power of 20 watts is 1,000 J of energy used in 50 seconds.

I'd go for the one that says that knees are fulcrums, lower legs are levers and the ankles hold loads.hope it ,happy homework/ study/ exam!