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Motion and Forces

QuestionAnswer
speed the rate of change of an object's position
average speed total distance divided by total time
constant speed a speed that doesn't vary
instantaneous speed speed at a given moment
acceleration the rate at which velocity changes
momentum the quantity of motion of a moving body (p=mv)
gravity a force of attraction between objects
weight a measure of the force of gravity between objects
mass the amount of matter in an object, not affected by gravity
free fall occurs when the only force acting on a falling object is gravity
terminal velocity the fastest speed a falling object achieves
centripetal acceleration occurs when an object continually accelerates due to moving in a circle (moon, satellites)
projectile any object that is thrown or shot
inertia the tendency of an object to resist a change in its motion
velocity the speed AND direction of a moving object
Created by: lfurrow13
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