Work,power and energy ( module 5)
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15 Terms
Work done by a force
Force X distance moved in direction of force
Power
work done divided by time
Vector quantities
Displacement
Velocity
Acceleration
Force
Momentum
Scalar
Length. Mass. Time. Speed. Temperature. Volume. Energy. Potential difference. EMF. Charge. Density. Power.
Acceleration
Rate of change of velocity ( gradient on a velocity-time graph)
Velocity
Total displacement divided by total time
Average velocity
Total displacement divided by total time
average speed
Total distance divided by total time
Displacement
Distance in a given direction
Newton
The force is 1N when a 1kg mass has an acceleration of 1m/s
Joule
1j of work is done when a force of 1N moved 1m in the direction of force
watt
A power of 1w is developed when one joule of work is done per second
Stopping distance
Thinking distance + breaking distance
Breaking distance
The distance traveled after the breaks are applied until the car stops
Thinking distance
The distance traveled from when a driver sees a problem until the breaks are applied