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Ch2 Vocab

Reference Point Stationary object used to determine movement.
Earth The most common reference point.
Displacement The distance and direction from the starting point.
Distance How far an object has moved
Meter SI unit of distance
Second SI unit of time
Meters/Second SI unit of speed
Changing speed Speed that is increasing or decreasing
Constant speed Speed that is staying the same
Speed Change in distance per unit of time
Acceleration Change in speed per unit of time
Instantaneous speed Speed at one moment in time
Average Speed Total distance/total time
Force A push or pull
Newton SI unit of force/weight
m/s/s SI unit of acceleration
Velocity Speed and direction
Acceleration When an object speeds up or slows down
Inertia An object's resistance to change its motion
Balanced Force Forces on an object that are equal in size and opposite in direction
Net Force Sum of the Forces acting on an object
Newton's First Law An object in motions stays in motion, and an object at rest stays at rest, unless acted upon by an outside force
Speed Ex: 30 km/min
Distance Ex: 50 km
Velocity Ex: 80 km/hour North
Displacement Ex: 20 km South
Acceleration Ex: 58 m/s/s
Created by: Ms. Lincoln