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22 Cards in this Set
- Front
- Back
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Motion
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an object is considered in motion when it's distance from another object changes.
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The position of any object must be given in respect to a...
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Reference Point
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A reference point is usually the LOCATION where the...
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Start of Motion
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Reference Points
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usually stationary
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Distance
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The total LENGTH traveled by a moving object.
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Speed
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The distance an object traveled in a unit of time.
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What is the calculation for speed?
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Speed= distance/ time
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Velocity
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Speed given in a direction. (how fast and which way)
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Velocity Direction
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The line or path along with an object moves.
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Force
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any push or pull that can cause a change in motion.
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Force
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described by it's magnitude and it's strength.
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Types of Force
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Friction, Gravity- weight, support force, applied force.
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Friction
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The resisting force opposing the motion. it is exerted in the opposite direction of the motion.
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Gravity
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Downward pulling force with which the earth attracts an object towards itself.
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Support Force
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Perpendicular force exerted upon an object which is in contact with another stable object.
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Applied Force
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Force which one object exerts on another object.
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Net Force
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A combination of ALL forces that act on an object.
Net forces always act in the direction of the greater force. |
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How to calculate net forces.
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Forces acting in the same direction- adding forces.
Forces acting in opposite directs- subtracting forces. |
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Balanced forces
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Balanced forces acting on an object in opposite directions.
Will not cause change in the objects motion. Objects in motion maintain a constant rate in a constant direction. |
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Newton's first law of motion
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an object in motion will stay in motion and an object at rest will stay at rest.
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Unbalanced Forces
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an unequal force that changes an objects motion (causes the object to accelerate.)
Unbalanced forces require to change motion. |
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Newton's Second law of motion
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The relationship between an objects mass its acceleration and the applied force is f=ma.
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