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11 Cards in this Set
- Front
- Back
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Distance |
A measure of how far an object has moved. SI unit is metres (m) |
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Time |
A measure on how long an object takes to move. SI unit is seconds (s) |
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Speed |
A measure of the rate of motion. The distance covered by the time taken. SI unit is metres per second |
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Acceleration |
The rate of change in velocity or speed per unit of time. SI unit is metres per second per second |
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Deceleration |
The rate of decreasing velocity or speed per unit of time. Negative acceleration. SI unit is metres per second per second |
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Distance-time graph |
A graph used to show distance in metres (y axis) vs time in seconds (x axis). The graph is used to measure the speed (V) of an object. |
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Speed-time graph |
A graph used to show speed in metres per second (y axis) vs time in seconds (x axis). The graph is used to measure the acceleration (a) of an object. |
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Formula: Calculate speed from a distance time graph |
Gradient: V=Change in distance/ change in time V=Change in y axis/ change in x axis V=Change in distance (m)/ change in time (s) V=
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Formula: Calculate acceleration from a speed time graph |
Gradient: a=Change in speed/ change in time a=Change in y axis/ change in x axis a=Change in speed (V)/ change in time (s) a= |
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Area of rectangle |
A=width x height |
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Area of triangle |
A=width x height/2 |
