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Kinematics revision
Term | Definition |
---|---|
acceleration | any change in speed or direction |
average acceleration | the average change in velocity over a period of time |
average speed | the average of instantaneous speeds over a period of time |
average velocity | the average change in position over a period of time |
displacement | the change in position of an object including a direction |
distance | how far an object has travelled |
force | a push or pull |
instantaneous speed | how fast an object is moving at a single moment |
speed | the rate of change of an object's position |
time | how long an object has travelled for |
velocity | the speed of an object in a certain direction |
gravity | 9.8m/s/s |
steady positive acceleration | / |
no acceleration | - |
negative acceleration | \ |
units for acceleration | m/s/s |