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Audrey Ritter

on 14 May 2015

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P4: Forces
What is force?
1. Forces cause movement.

2. Forces cause

to the movement of an object.
- change in speed (faster = increase slower = decrease)
- change in direction
- change in shape

3. Pushing and pulling are forces.
Looking at Forces
How do we measure force?
This picture is a bonus picture.
You do NOT need to know this.
But if you are interested... :)
spring scale
Unit of Measurement
Forces are measured with Newtons.
Balanced Forces
Forces are balanced when...
- equal force is put on an object in opposite directions.
These websites has an interactive video about forces. During the video, you click on things to see what happens. Try it!


http://www.bbc.co.uk/schools/scienceclips/ages/5_6/ pushes_pulls.shtml




For more information about sources, read here!

Games and More Information!!!
Unbalanced Forces
Forces are unbalanced when...
- Forces are not an equal size (number of Newtons).
- Forces are not opposite in direction.

Video about unbalanced forces:

Full transcript