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Force & Momentum
LC Physics
Term | Definition |
---|---|
Force | (mass)(acceleration) |
Mass | Measure of how difficult it is to accelerate that body. |
1 Newton | The force that gives a mass of 1 kg an acceleration of 1 m/s^2. |
Weight | (mass)(gravity) |
Newton's First Law of Motion | Every body will remain at rest or continue to move at a constant velocity unless an unbalanced external force acts on it. |
Newton's Second Law of Motion | Force is directly proportional to rate of change of momentum. |
Newton's Third Law of Motion | When body A exerts a force on body B, then body B exerts an equal but opposite force on body A. |
Momentum | (mass)(velocity) |
Friction | Force that opposes motion. |
Principle of Conservation of Momentum | Momentum before = momentum after in a closed system. |