March 2004
Beginner
504 pages
9h 2m
English
Content preview from Beginning Math and Physics for Game Programmers
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Chapter 11, “Newton's Laws”
Weight
w = mg
where m = mass and g = acceleration due to gravity (–9.8m/s2 on Earth).
Newtons
1N = 1kg*m/s2
1N = 0.2248lbs
Static Friction
FS = –μSN
where N is the normal force.
Kinetic Friction
FK = –μKN
where N is the normal force.
Free-Body Diagram
Use arrows of relative lengths to represent forces.
Draw all arrows originating from the center of the object and pointing in the appropriate direction.
Newton's First Law
If Fnet = 0, no change in motion occurs.
Newton's Second Law
Fnet = ma
where m is mass and a is acceleration.
Newton's Third Law
For every force there is an equal and opposite force, or, when two objects come into contact, they exert equal and opposite forces upon each other.
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