# Force and Motion, Friction, Gravity & Newton's 3 Laws of Motion

### 9 terms by mariano-m

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### Force and Motion

Describe everyday things that are happening all the time. eg. pick up a pencil, turn a page, raise your hand......and so on.

### Motion

means moving something from one place to another. eg. force used to swing a bat

### Speed

is the scientific term that means the rate of motion, or how fast something travels.

### Gravity

is the force that pulls everything toward the center of the Earth. The Earth's gravity causes everything on Earth to have weight.

### Physics

In the science of physics the words Force, Motion, Speed, Gravity and Weight all have special meanings in Physics.

### Friction

Is the force that happens when two things rub together.

### Newton's 1st Law of Motion

An object moving in a straight line will continue moving ina straight line, unless acted on by an outside force. Also, an object at rest will stay at rest. The word for this is inertia.

### Newton's 2nd Law of Motion

Force will cause a change in the otion of an object. The change in motion depends on the smount of force and the mass of the objec. There is a formula for this F = ma (Force = Mass X Acceleration.

### Newton's 3rd Law of Motion

For each action, ther is an equal and opposite reaction.

Example: