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Chapter 10-11 vocab
Term | Definition |
---|---|
Speed | The rate at which someone or something is able to move. |
Acceleration | The change in velocity divided by the time it takes for the change to occur. |
Average Speed | The total distance traveled by an object. |
Inertia | Tendency of an object resist a change in its motion. |
Instantaneous speed | Speed of an object at one instance in time. |
Law of conservation of momentum | A collision occurring between two objects. |
Mass | a coherent, typically large body of matter with no definite shape. |
Velocity | (in general use) speed |
Balanced forces | Two forces acting in opposite directions. |
Unbalanced forces | Forces that cause a change in the motion of the object. |
Newton's first law of motion | A object at rest stays at rest. |
Friction | The resistance that one surface or object encounters when moving over another. |
Displacement | The moving of something from its place or position. |
Relative location | A point or place in relation to another point or place |
Force | Strength or energy as an attribute of physical action or movement. |
Net force | The overall force acting on an object. |
Static friction | The friction that exists between a stationary object and the surface on which it's resting. |
Newton's second law of motion | The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force. |
Gravity | The force that attracts a body toward the center of the earth |
Weight | A body's relative mass |
Center of mass | A point representing the mean position of the matter in a body or system. |
Newton's third law of motion | For every action, there is an equal and opposite reaction. |