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Motion/Forces Ch 2

Vocabulary from Chapter 2: Forces

QuestionAnswer
force a push or a pull
net force the overall force acting on an object when all the forces are combined.
Newton's first law states that objects at rest remain at rest, and objects in motion stay in motion, unless acted on by an unbalanced force.
Newton's second law states that the acceleration of an object increases with increased force and decreases with increased mass.
centripetal force any force that keeps an object moving in a circle.
Newton's third law states that every time one object exerts a force on another object, the second object exerts a force that is equal in size and opposite in direction back on the first object.
Momentum is a measure of mass in motion; the product of an object's mass and its velocity.
collision a situation in which two objects in close contact exchange energy and momentum.
conservation of momentum states that the total momentum of a system of objects does not change, as long as no outside forces are acting on that system.
Created by: misskazantzis
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