Force and motion
Simple Machines and newtons laws
Simple machines all around us
Think of your life without simple machines. It would be hard to live without them. They are all around us. A car has a wheel and axle,a ramp is an inclined plane, and an axe is a wedge. Simple machines help you get work done easier and quicker. A car is an example of Newton's first law an object at rest will stay at rest and objects in motion will stay in motion unless acted upon by an outside force. If you slammed on the breaks and the car jerked and you got in a crash you would fly out of the window and not stop unless you were stoped by an outside force like a wall.
Newtons laws
Newtons 1st law
(The law of inertia)objects in motion will stay in motion and objects at rest will stay at rest unless acted upon by an outside force. If you were on a motorcycle and you hit a foam wall and you went flying you would not stop until you hit something or inertia and gravity pull you down
Newton's second law
F=ma or force =mass.acceleration the greater the force the greater the speed. If a Yorkie tried to pull a rock that weighed 100 pounds it would go a lot slower than a pit bull pulling it.
Newton's third law
For every action there is an equal and opposite reaction. In this picture a ball hits 5 other balls and it makes the ball on the end move and then the cycle keeps going doing the same thing unles you stop it.
Wedge
A wedge is a block that you can put in between a piece of wood and it will help you split the wood apart
Inclined plane
A ramp is an example of an inclined plane. You can use a ramp to push heavy objects or just so you can get up the stairs.
Lever
A see-saw is an example of a lever. You can use a lever to lift heavy objects
Screw
A screw is a nail with an inclined plane wrapped around it. It can help you hold things together.
Pulley
A well is an example of a pulley. You pull on a rope and it pulls something up. One way it helps you by being able to get things out of a well.
Wheel and axle
A car is an example of a wheel and axle because it has wheels on the bottom and it allows you to drive on the road.
How are they connected
Newtons laws and simple machines are connected because machines don't change the amount of work you have to do but helps you do it faster and the laws of motion don't change just because you use a simple machine.
I hope you enjoyed learning about simple machines and Newtons laws of motion