Newton's 3 laws are...
inertia: things tend to continue to do what they are doing.
Change: to make something change you need a force to change it. the force needed = the mass times its acceleration
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Resistance: When you push on something, it pushes back.
From yahoo answers
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The answer would be 'First rocks formed on Earth'.
You can't see beyond a blind turn, so a mirror would allow you to see around the corner.