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PS U1
newtons first law, inertia, and motion
Term | Definition |
---|---|
Distance | how you have traveled between two positions. It is always positive. it is a scalar quantity. |
Displacement | change in position. it is the straight line distance between your starting position and ending position. It is equal to Final position minus initial position. It can be positive or negative. It is vector quantity. |
Scalar | quantity that only requires magnitude (how big) |
Vector | quantity that require both magnitude (how big) and directions. |
Speed | how fast something is moving. It is equal to distance divided by time. It is scalar quantity. |
Velocity | rate at which position changes. It is equal to displacement divided by time. It is a vector quantity. |