martes, 15 de febrero de 2011

TYPES OF FORCES

There are different types of forces.
- GRAVITY. This force makes objects fall to the ground. If we throw an object into the air, gravity pulls it to the ground.

-ELECTRIC FORCE.This force is found between electrically charged objects. Electric force can attract or repel.

-MAGNETIC FORCE.This force affects magnets and some metallic objects. Magnetic force can attract or repel.

-FRICTION.When an object touches another object, it experiences a frictional force. This force acts in the direction opposite to the direction of movement. It slows or stops moving objects. For example, friction between a ball and the ground stops the ball rolling after a few metres.

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