# Force and motion

## simple machines a newtons laws are connected

Could you imagine life without simple machines? They help us with work we do in every day life. A wheel and axle is apart of a car. If you step on the brakes to fast you might experience Newton's first law of motion. The law states that, an object in motoin stays in motion and an object at rest stays at rest unless acted on by an outside force. When you step on the brake too fast the car will stop but your body will keep going.

## Three kinds of Simple machines

Simple machines help us do work we do in every day life. Simple machines don't reduce the amount of work we do, they just make the work easier. Simple machines are every where. One kind of simple machine is the pulley. A pulley is a flag on a flag pole. If you pull on one end of the rope the other end will make the flag go up or down. Another kind of simple machine is an inclined plane. If a person in a wheel chair wants to go up or down stairs they use an inclined plane or, a ramp. Another simple machine is the screw. When you want to go up or down you use the stairs. Strains are an example of a screw. You can find these stairs in a light house.

## Three kinds of simple machines

One kind of simple machine is a lever. You ,may not know it but the lever is at the park. The lever at the park is the seesaw. The seesaw has a fulcrum. The fulcrum is the thing in the middle of the seesaw. Another simple machine is a wheel and axle. The wheel and axle is a handle on the sink. When you turn the handle a pole on the other end moves in a circular motion. A wedge is a simple machine. The wedge can be a pair of scissors. Scissors cut things when you squeez them shut. They are also shaped like a wedge.