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PS Unit 2 Vocab
Force & Motion
Question | Answer |
---|---|
Force | Push or pull one object exerts on another |
Motion | When an object changes its position |
Balanced Force | Forces that are equal in size and opposite in direction |
Unbalanced Forces | Forces that are note equal in size and opposite in direction |
Inertia | The tendency of an object to resist a change in motion |
Gravity | The attraction 2 objects have on one another |
Velocity | The speed of an object and the direction of its motion |
Friction | Resistance to motion when two objects are in contact with one another |
Collision | The impact of the sudden, forceful coming together in direct contact of two bodies |
Newton's 1st Law | An object will move at a constant velocity until a net force acts on it |
Newton's 2nd Law | A net force acting on an object causes the object to accelerate in the direction of the net force. F=MA |
Newton's 3rd Law | Every action has an equal and opposite reaction |
Acceleration | Rate of change of velocity over time |
Speed | The distance an object travels per unit of time |
Mass | The amount of matter in an object |
Displacement | The moving of something from its place or position |