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3 cards from this section. Quick, good the night before a test.
What is the scientific definition of work?
Consider displacement when thinking of work.
What unit is used for power?
Remember that 1 W = 1 J/s.
What is work defined as in physics?
Think about how force interacts with movement.
True or False: Power is the same as work.
Remember the definitions of both terms.
A crane lifts a load of 500 kg to a height of 15 m in 20 seconds. Calculate the work done and the power output of the crane.
Use both work and power formulas to solve.
If a person exerts a force of 200 N to move a box 3 meters and it takes 6 seconds, calculate both the work done and the average power.
Calculate work first, then use that to find power.
6 more questions in this section. Enroll free to practise them all.
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