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Newton’s Laws


Newton’s First Law

Every object persists in its state of rest or uniform motion in a straight line unless it is compelled to change that state by forces impressed on it.

TLDR: A non-zero net force will induce a change in velocity (an acceleration).

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Newton’s Second Law

Force is equal to the change in momentum per change in time. For a constant mass, force equals mass times acceleration. $F=m \times a$

TLDR: The acceleration created by a force depends directly upon the mass of the object.

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Newton’s Third Law

For every action, there is an equal and opposite reaction.

TLDR: Objects exert an opposite and equal force as a kind of support.

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Examples

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Pātai

With the person next to you, write a paragraph describing how Newton’s 1st and 2nd Laws relate to projectile motion.


Whakatika



Whakawai/Practise