Mostrando entradas con la etiqueta gravity. Mostrar todas las entradas
Mostrando entradas con la etiqueta gravity. Mostrar todas las entradas

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.