gravity
Terms
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- A push or pull
- Force
- When a force make an object move
- Work
- Forces that can start or stop motion and can change speed or direction
- Pushes or pulls
- A force that slows or stops moving objects
- Friction
- Help people use force to make work easier
- Simple Machines
- A pulling force between one object and another
- gravity
- a simple machine made of a rope or chain wrapped around a wheel
- Pulley
- A simple machine made of a large wheel attached to a post or axle
- Wheel and Axle
- A simple machine with a slanted surface Example: A ramp
- Inclined Plane
- Is an incline plane wrapped around a post
- Screw
- Two incline planes joined back to back Wedges are used to split objects or to force them apart
- Wedge