Chapter 9, Motion and Force, Newtons Laws.

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Newton's First Law
A body will remain at rest or will continue to move at a constant velocity so long as there is zero resultant force acting upon it.
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Newton's Second Law (Word Definition)
The acceleration of a body is directly proportional to and in the same direction as the result force acting upon it. In addition, the acceleration is inversely proportional to the mass of the body.
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Newton's Second Law (Equation)
F=ma, but we tend to look at acceleration, so a=F/m. (a=acceleration/ms-2, m=mass/kg, F=Resultant force/N)
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Newton's Third Law
If body A exerts a force upon body B then body B exerts the equal and opposite force upon body A. The forces are of the same type and act upon the same line of action.
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"Newton 3 Pairs"
1. They act upon two different bodies.
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"Newton 3 Pairs"
2. They are of the same type. (e.g. gravitational, contact etc)
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"Newton 3 Pairs"
3. They are always equal in magnitude and opposite direction.
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Card 2

Front

The acceleration of a body is directly proportional to and in the same direction as the result force acting upon it. In addition, the acceleration is inversely proportional to the mass of the body.

Back

Newton's Second Law (Word Definition)

Card 3

Front

F=ma, but we tend to look at acceleration, so a=F/m. (a=acceleration/ms-2, m=mass/kg, F=Resultant force/N)

Back

Preview of the back of card 3

Card 4

Front

If body A exerts a force upon body B then body B exerts the equal and opposite force upon body A. The forces are of the same type and act upon the same line of action.

Back

Preview of the back of card 4

Card 5

Front

1. They act upon two different bodies.

Back

Preview of the back of card 5
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