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3 cards from this section. Quick, good the night before a test.
Define work in the context of physics.
Consider the formula involving force and distance.
What is the unit of energy?
Think of the energy involved in lifting a weight.
What is the formula for work done?
Consider the trigonometric implications.
True or False: Power is defined as the rate of work done.
Think about how fast energy is transferred.
A block of mass 3 kg slides down a frictionless incline of height 5 m. Calculate its speed at the bottom of the ramp.
Set potential energy equal to kinetic energy and isolate the velocity.
A car does 2000 J of work in accelerating from 0 to 25 m/s. What is its mass?
Rearranging the kinetic energy formula will give you mass.
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