 # FORCE. A FORCE IS A PUSH OR A PULL. IF FORCES ARE POWERFUL ENOUGH, THEY MAY RESULT IN MOTION.  What is a force?

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FORCE

A FORCE IS A PUSH OR A PULL. IF FORCES ARE POWERFUL ENOUGH, THEY MAY RESULT IN MOTION.  What is a force?

IF THE NET FORCE ACTING ON AN OBJECT IS ZERO, THE OBJECT REMAINS AT REST, OR IF IT IS ALREADY MOVING, IT REMAINS MOVING.  Newton’s first law of motion

STATIC FRICTION - OCCURS WHEN AN OBJECT IS AT REST SLIDING FRICTION - WHEN AN OBJECT IS SLIDING ACROSS A SURFACE ROLLING FRICTION - WHEN AN OBJECT IS ROLLING ACROSS A SURFACE.  Three Types of Friction

THE SECOND LAW STATES THAT THE FORCE ON AN OBJECT IS EQUAL TO THE OBJECT'S MASS TIMES IT ACCELERATION: F = MA  Newton’s second law

NEWTON'S 3RD LAW STATES THAT FORCES ALWAYS ACT IN EQUAL AND OPPOSITE PAIRS. WHEN ONE OBJECT EXERTS A FORCE ON A SECOND OBJECT, THE SECOND OBJECT ALSO EXERTS A FORCE ON THE FIRST.  Newton’s third law of motion

1ST LAW: INERTIA LARGE BOULDER, HARD TO START MOVING, HARD TO STOP MOVING 2ND LAW: FORCE APPLIED TO AN OBJECTWILL ACCELERATE THE OBJECT --SMALL OBJECT ACCELERATES RAPIDLY,LARGE OBJECT ACCELERATES SLOWLY. 3RD LAW: EQUAL AND OPPOSITE REACTIONS ROCKET, SKATEBOARD  Examples of Newton’s laws

MASS IS THE TOTAL AMOUNT OF MATTER IN AN OBJECT. WEIGHT IS THE MEASURE OF THE ATTRACTION OF GRAVITY TO AN OBJECT.  What is the difference between mass and weight?

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