# Law's of Motion

### 10 terms by laurenhoyson

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### momentum

a quantity defined as the product of the mass and velocity of an object

### inertia

(physics) the tendency of a body to maintain is state of rest or uniform motion unless acted upon by an external force

### air resitance

upward force of air against a moving object

### vertical

velocity in an up or down direction

### direction

two objects with the same velocity must be moving in the same ______

### gravity

a force of attraction between objects that is due to their masses

### Newton's First Law of Motion

An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted by an unbalanced force.

### Newton's Second Law of Motion

The acceleration of an object depends on the mass of the object and the amount of force applied.

### Newton's Third Law of Motion

Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first.

### equation for acceleration

acceleration= force/ mass
a= F/m F= m x a

Example: