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8 Sci Ch 15

8th Grade Science Force and Newton's Laws Vocabulary

QuestionAnswer
FORCE A PUSH OR A PULL.
NET FORCE THE TOTAL FORCE FELT BY AN OBJECT.
BALANCED FORCES WHEN MOTION ISN'T CHANGING, FORCES CANCEL EACH OTHER OUT AND NET FORCE IS ZERO.
UNBALANCED FORCES NET FORCE IS NOT ZERO AND OBJECT ACCELERATES.
NEWTON'S FIRST LAW OF MOTION AN OBJECT WILL REMAIN AT REST OR MOVE WITH A CONSTANT VELOCITY UNTIL IT IS ACTED UPON BY A NET FORCE.
FRICTION THE RUBBING FORCE THAT ACTS AGAINST MOTION BETWEEN TWO TOUCHING SURFACES.
STATIC FRICTION KEEPS AN OBJECT AT REST; PREVENTS AN OBJECT FROM MOVING WHEN A FORCE IS APPLIED.
SLIDING FRICTION SLOWS DOWN AN OBJECT THAT SLIDES.
ROLLING FRICTION FRICTION NEEDED TO MAKE A WHEEL TURN.
AIR RESISTANCE AIR PUSHING AGAINST YOU.
NEWTON'S SECOND LAW OF MOTION AN OBJECT ACTED UPON BY A NET FORCE WILL ACCELERATE IN THE DIRECTION OF THE FORCE ACCORDING TO THE EQUATION ACCELERATION EQUALS NET FORCE DIVIDED BY MASS.
NORMAL FORCE OUTWARD FORCE FROM A SURFACE.
TERMINAL VELOCITY THE SPEED AN OBJECT REACHES WHEN THE FORCE OF GRAVITY IS BALANCED BY THE FORCE OF AIR RESISTANCE.
NEWTON'S THIRD LAW OF MOTION FORCES ALWAYS ACT IN EQUAL BUT OPPOSITE PAIRS.
ACTION-REACTION FORCE ALWAYS THE SAME SIZE BUT ARE IN OPPOSITE DIRECTIONS AND ACT ON DIFFERENT OBJECTS.
Created by: smurray817
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