Sunday, February 21, 2010

Forces

What is a force?
A force is a push and pull.

Examples of force
-Gravity
-Magnetic forces
-friction

What units are forces measured in?
Force is measured by newtons.

What is the equation that is used to calculate a force.
The equation that is used to calculate a force is, Force=mass x acceleration

Food chains







1. fruit,cactus and Flowering Plants.

2. Insects, Scorpions, Rattlesnakes,Small Mammals and lizard.

Sunday, January 31, 2010

Moments

1.a) Ax0.40=0.30x2n
a(0.40)=2n(0.30)
a(0.40)0.40=2n(0.30)/0.40
a=2n(0.75)

1.b)4nx0.25m=0.20xb
4nx(0.25m)/0.20=0.20b/0.20
5n=b
b=5h

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