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Sci8/Motion

First 9 Weeks Review

TermDefinition
Position object changes location
Reference Point To know if an object changed position you need a ______ _______. The ______ ________ does NOT move.
Speed equals the distance traveled divided by the time it takes to travel that distance
Formula for Speed Speed=distance/time
Velocity the speed of an object and the direction of its motion
Acceleration occurs when an object speeds up, slows down, or turns.
Positive acceleration speed up. The line on a graph will slope up.
Negative acceleration slows down. The line on the graph will slope down.
Zero acceleration a horizontal line on a speed time graph means zero acceleration
A line on a graph that has a STEEPER LINE means... ...a FASTER time for distance
A horizontal line means... ...NO distance for time.
Newton's 1st Law of Motion an object at rest will stay at rest until an unbalanced force acts upon it. An object in motion will stay in motion until an unbalanced force acts upon it. INERTIA and object resistant to change.
Newton's 2nd Law of Motion when a force acts upon the object the object will accelerate in the direction of the force.
Newton's 2nd Law Formula Force=Mass X Acceleration
Newton's 3rd Law of Motion force always acts in equal but opposite pairs. For every action there is an OPPOSITE but EQUAL reaction.
Created by: mgrant
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