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P5 - Coggle Diagram
P5
Forces
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Contact
- Friction
- Tension
- Air Resistance
- Normal Contact Force
Non-Contact
- Non-Contact Sport
- Gravitational Force
- Electrostatic Force
- Magnetic Force
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Speed
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People walking, running and cycling speed can be affected by:
- Ability
- Age
- Distance travelled
- Type of ground
- Weather
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Newtons Laws
1st Law
- If zero gravity force acts on a stationary object, The object doesn't move
- If zero resultant force acts on moving object, it continues moving at same velocity
- If non-zero resultant force acts on an object, object accelerates
2nd Law
- F = ma
- Acceleration is directly proportional to resultant force
- Acceleration is inversely proportional to mass
3rd Law
- Two interacting objects expert equal and opposite forces on each other
- Rocket exhaust gas pushed downwards by rocker -> Causes equal and opposite force as gas pushes back on the rocket -> Rocket moves when upwards force is greater than rockets weight
Scalars
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- Speed
- Distance
- Temperature
- Mass
- Time
Vectors
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- Force
- Velocity
- Displacement
- Momentum
- Acceleration
Weight, Force and Gravity
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Work Done
Work Done - When a force moves an object from one point to another, energy is transferred and work is done on the object.
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Deformation
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Inelastic - Object doesn't go back to its original shape and length after the force has been removed
Work done + Elasticity
Force stretches or compresses object -> Work is done -> Energy is transferred to objects elastic potential energy store
In elastic deformation, all energy is transferred to objects elastic potential energy store
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Resultant Forces
Resultant Force - A single force that can replace all the forces acting on an object to give the same effect as all the original forces acting together
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