martes, 1 de marzo de 2011

FORCES AND MOTION

Forces can affect motion in many different ways. They can:

-Make something move:for exemple, when you open a door, you push or pull to move the door.
-Stop a moving body:for example, when a basketball player catches a ball, the ball stops.
-Change the direction of a moving object: for exemple, when a tennis player hits a ball, it goes to the other side of the court.
-Increase the speed of a moving body: for exemple, the force a skateboarder uses to push the skateboard makes it go faster.
-Reduce the speed of a moving body:when the skateboarder puts both feet on the skateboard, the wheels rub against the ground and friction makes the skateboard go more slowly.

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