1. What is a Force?
A force is a push or pull on an object
A force has a size AND a direction
Examples of forces:
-Pushing your book across a table
-Pushing a box
2. Newton’s First Law
What is Newton’s 1st law??
• Objects in motion stay in motion
• Objects at rest stay at rest
3. Force is equal to an object’s mass times its acceleration
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Newton’s Second Law
m = 1000 kg
a = 0.05
f = ???
f = 50 N
4. Newton’s Third Law
All forces exist in pairs (pair = 2)
For every action, there is an equal and opposite reaction
THERE CANNOT BE ONE FORCE
6. Complete Questions in Notebook
1. Using the equation to the right, what will be
more difficult to accelerate, an object with a
large or a small mass?
2. Explain Newton’s first, second and third laws
and draw a picture to help explain each law.
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