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Net
Force
Learn...Forces
and motion will move your brain.
Forces
Forces have both a magnitude and direction. Often more than
one force acts on an object at the same time. The overall
effect of these forces is called the net force. The change
in motion of an object is related to the size and direction
of this net force.
Different
types of Motion
The three most common types of change in motion are speeding
up, slowing down, and changing directions. Wind, water, steam,
burning gases, and springs exert friction, buoyancy, lifts,
and forces. Gravitational, electrical, and magnetic are the
most familiar from a distance.
Forces and Net Forces
Forces can be added together to determine the net force acting
on an object.
Ball
direction 
If the
net force on an object
is perpendicular to the direction
of the object's motion, the force
willchange the direction of
motion of the object but not the
speed of the object. The direction
of the acceleration and the net
force for an object moving in a
circle with constant speed are
toward the center of the circle.
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