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PS unit 1
newtons first law, inertia, and motion
Question | Answer |
---|---|
Distance | How far you traveled between two positions. It it always positive. It is a scalar quanity |
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 a vector quanity |
scalar | quantity that only requires magnitude (how big) |
vector | quantity that requires both magnitude (how big) and directions |
speed | how fast your going |
velocity | speed times distance |
Newton's First Law | AKA the law of inertia. An object will stay at rest and a object will stay in motion in the same direction until acted upon by an unbalanced force |
Mass | a measure of the amount of matter an object contains. Also, a measure of the amount of inertia an object has |
Inertia | the resistance an object has to changes in its motion |
Force | any push or pull (interaction) that can cause a change in motion |