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Motion
Question | Answer |
---|---|
position | an object's location in space |
motion | the change in an object's position in a specific amount of time |
rate | motion |
linear motion | objects move along lines |
displacement | the distance an object moves in a specific direction |
scalar quantity | the distance alone; can be described using the magnitude (a number) |
vector quantity | another name for displacement; can be described by both a magnitude and a direction |
speed | distance (feet) per unit time (min) |
equation for speed | speed = distance/time |
instantaneous rate | present speed |
average rate | miles per hour (mph) |
velocity | the speed plus the direction along the path |
uniform motion | motion with a constant rate |
formula for velocity | velocity = final position - initial position/final time - initial time |