measuring motion
Terms
undefined, object
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- define reference point
- an object that appears to stay in place
- define motion
- an object's change in position over time when compared with a reference point
- define speed
- the rate at which an object moves
- what 2 things does speed depend on?
- distance traveled and time taken to travel that distance
- give the formula for average speed
- Total distance divided by total time
- define velocity
- the speed of an object in a particular direction
- define acceleration
- the rate at which velocity changes.
- what changes with velocity?
- speed or direction
- Give the formula for acceleration
- final velocity minus starting velocity divided by the time it takes to change velocity
- what is positive acceleration?
- speeding up
- what is negative acceleration?
- slowing down
- what is centripetal acceleration?
- acceleration that occurs in a circular motion
- define force
- a push or pull
- foce is expressed with which unit?
- newton
- define net force
- the force that results from combining all the forces exerted on an object
- unbalanced forces will lead to what?
- a change in motion