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4 cards from this section. Quick, good the night before a test.
Define work in a physics context.
Think about force and movement.
What is the SI unit of energy?
Think about the same unit used for work.
What is the formula for calculating work?
Remember to consider the direction of force.
Is energy conserved in an isolated system?
Think about energy transformations.
Calculate the speed of a car if it has 240,000 joules of kinetic energy and its mass is 800 kg.
Rearrange the kinetic energy formula to find velocity.
If a 10 kg object is lifted 3 meters, how much work is done against gravity?
Use the work done against gravitational force.
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