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24 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Scalar quantity |
Size but no direction. Eg distance and speed |
Good luck scrub |
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Vector quantity |
Have a size and a direction. Eg displacement and velocity |
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Motion |
Displacement, velocity and acceleration |
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Displacement |
Distance and direction |
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Velocity |
Speed and direction |
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Acceleration |
Change in velocity over time |
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Hooke's Law |
F=kx |
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Weight force |
Force on an object due to the pull of the earths gravity |
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Centripetal Force |
Centre directed force that is required to keep an object moving in a circle |
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Force on an elastic body |
The stretch x of an elastic body is proportional to the applied force F |
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Balanced Forces |
Object is stationary or at constant velocity |
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Newton's 1st law |
If the net force on an object is zero, then the object will either be stationary or travel at a constant velocity |
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Unbalanced Forces |
Object is accelerating |
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Newtons 2nd Law |
If a net force acts on an object then the object will accelerate in the direction of the net force |
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Newton's 3rd Law of Motion |
For every action there is an equal and opposite reaction |
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Torque |
Turning or twisting effects about a point. A force applied to a pivot causes torque |
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Equilibrium |
An object in equilibrium is either stationary or moving at a constant velocity |
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Momentum |
A measure of the difficulty required to stop an object in motion |
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Momentum law |
Momentum is conserved |
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Impulse |
A force acting on an object for a period of time that causes a change in momentum |
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Elastic Collision |
Collisions where mechanical energy is conserved |
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Inelastic Collision |
Collisions where mechanical energy is not conserved. |
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Work |
Force on an object exerted over a distance |
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Power |
Rate at which work is done. |
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