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4 cards from this section. Quick, good the night before a test.
What is the SI unit of work?
Think of work and energy being measured the same way.
What formula do we use to calculate kinetic energy?
Remember, mass and velocity are involved in this calculation.
Which formula calculates work?
Think about how direction affects work.
True or False: Work can be done without displacement.
Consider the definition of work.
A hiker climbs a hill of 120 m height carrying a backpack of 15 kg. Calculate the potential energy gained by the backpack.
Use the potential energy formula, and substitute the values properly.
A car has a mass of 1000 kg and accelerates from rest to a speed of 25 m/s. Calculate the work done on the car.
Think of how work relates to the change in kinetic energy.
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