In what unit or units is work measured?

Supposed Herbert is using a pulley to life a crate. Which of the following would cause Herbert to do more work?

When you are holding a heavy object stationary in your arms, you are not doing any work even though you may get tired. Why is this?

How much work would you have to do in order to life a 60 N object 2.5 meters?

Robert pulls a bucket of water 15 meters up from the bottom of a well. He pulled with a force of 58 newtons. How much work did Robert do?

In which of the following situations would the least work have been done?

Which of the following is the best definition for power?

1 J/s equals-

Fernando does 550 Joules of work in 20 seconds. What was Fernando's power?

While building a fence, Simon did 1150 Joules of work in 50 seconds. What is Simon's power?

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