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2 cards from this section. Quick, good the night before a test.
What is the formula for work?
Think about how force and displacement are related.
What unit is used for energy?
It's the same unit for work.
What is the formula for kinetic energy?
Remember the factor of 1/2.
True or False: Power is the same as work.
Think about the time factor.
A 3 kg object is raised to a height of 5 meters. Calculate its potential energy and discuss the energy transformation involved when it is dropped.
Remember to use the formula for potential energy.
A motor lifts a 50 kg load 2 meters in 4 seconds. Calculate the work done and average power output.
Use both the work and power formulas provided.
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