5 Steps to a 5 AP Physics C 2017 by Jacobs Greg

Author:Jacobs, Greg [Jacobs, Greg]
Language: eng
Format: epub
Publisher: McGraw-Hill Education
Published: 2016-08-04T16:00:00+00:00

Rapid Review

• Energy is the ability to do work. Both energy and work are scalars.

• The work done on an object (or by an object) is equal to that object’s change in kinetic energy.

• Potential energy is energy of position, and it comes in a variety of forms; for example, there’s gravitational potential energy and spring potential energy.

• The energy of a closed system is conserved. To solve a conservation of energy problem, start by writing K i + Ui + W = K f + Uf , where “i ” means “initial,” “f ” means “final,” and W is the work done by friction or an externally applied force. Think about what type of U you’re dealing with; there might even be more than one form of U in a single problem!

• Power is the rate at which work is done, measured in watts. Power is equal to work/time , which is equivalent to force multiplied by velocity.

• If the functional form of a conservative force is known, then the potential energy attributable to that force is given by

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