Physical World Forces Middle School

The Physical World: Forces Ms. Novak 2008-2009

Objectives ,[object Object],[object Object],[object Object]

Force ,[object Object],[object Object],[object Object]

Force ,[object Object],[object Object],[object Object],[object Object]

Direction of Force ,[object Object],[object Object],Force 1 (pulling) Force 2 (Pushing)

Combining Forces ,[object Object],[object Object],Force 1 Force 2 Force 1 + Force 2 = Net Force

Combining Forces: Same Direction ,[object Object],[object Object],[object Object],[object Object]

Combining Forces: Opposite Direction ,[object Object],[object Object],Force 1 Force 2

Opposite Direction cont. ,[object Object],[object Object],[object Object],[object Object]

Equal Sized Forces Force 1 Force 2 15 N 15 N Force 1 – Force 2 = Net Force 15 N – 15 N = O N

Balanced/Unbalanced Forces ,[object Object],[object Object],[object Object]

Contact/Non Contact Forces ,[object Object],[object Object]

Gravity ,[object Object],[object Object],[object Object],[object Object]

Friction ,[object Object],[object Object]

Static Friction ,[object Object],[object Object],Applied Force Static Friction Object Does NOT MOVE

Sliding Friction ,[object Object],[object Object],[object Object]

Causes of Friction ,[object Object],[object Object],[object Object]

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