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4 cards from this section. Quick, good the night before a test.
Define work in physics.
Think about the relationship between force and movement.
What is the SI unit of work?
Consider what unit is used for energy as well.
What is the unit for work?
Remember, it's also used for energy.
If no displacement occurs, is work done?
Think about the definition of work.
A car is pushed with a force of 500 N at an angle of 45° for 10 meters. Calculate the work done on the car.
Use the cosine function to find the effective component of the force.
You exert a force of 300 N on a box, but it only moves 2 meters due to friction acting in the opposite direction. Calculate the work done.
Remember that cos(180°) produces a negative value.
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