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3 cards from this section. Quick, good the night before a test.
Define work in physics.
Think of force and movement.
What is the SI unit of energy?
It's also the same unit for work.
What is the formula for work?
Check the relationships of force and direction.
True or False: Energy can be created or destroyed.
Think about the conservation of energy principle.
A car of 1200 kg speed at 15 m/s. How much kinetic energy does it have and what would be its energy if it were lifted to a height of 10 m?
Calculate each separately using the respective formulas.
Calculate the power if a force of 200N does 400 J of work in 5 seconds.
Use the power formula P = W/t.
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