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# Forces

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by

## Paul Sheffield

on 26 February 2018

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#### Transcript of Forces

Do it now
what is newtons 2nd law?
If an object has a weight of 200kg and is pushed with a forc of 50N, what is the acceleration?
Gravity is 9.8 N/Kg
Inertia
The tendancy for motion to remain unchanged
How difficult it is to change the velocity of an object
Inertial mass
mass= Force / acceleration
Newtons third law
Clips
Forces
L.O
Inertia
Newtons third law

when two objects interact they exert equal and opposite forces on each other
Skaters
in equilibrium: Wall
Weight and normal contact force although in equilibrium are not the same force and therefore not newtons third law.
pages 144-145
Full transcript