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Study for Vocab. test on Monday (Nov.8)


the distance traveled divided by the time

average speed

the total distance traveled divided by the total time taken

instantaneous speed

the speed of an object at one moment in time


change in velocity divided by time taken for the change to take place

positive acceleration

speed up

negative acceleration

slow down


speed and direction of a moving object


tendency of an object to resist a change in it's motion


a measure of how hard it is to stop a moving object; dependent on it's mass and velocity

law of conservation of momentum

the total momentum of objects that collide with each other is the same before and after the collision


when two or more objects hit each other


a change in position

relative motion

a change in position of one object compared to the position of another


how far an object moves


the distance and direction an object moves relative to it's starting point

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