# Science

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### Newton's First Law

An object in motion will stay at a constant velocity unless acted upon by an unbalanced force (also known as the Law of Inertia)

### Inertia

The tendency of an object to resist a change in motion, (depends on the objects mass)

### Newton's Second Law

Acceleration depends on net force and the objects mass

### Formula for Acceleration

Acceleration = Net force/Mass

m/s2

newtons

kg

### Newton's Third Law

For every action there is an equal and opposite reaction

Mass x Velocity

kg x m/s

m/s

### Conservation of Momentum

Momentum is always conserved unless acted upon by an outside force

A push or pull

### 2 Characteristics of force

Depends Direction and Magnitude
(2 characteristics of ____)

### Formula for Weight

Mass x Acceleration

### Weight

Force exerted on a person or object at the surface of the planet

### Gravity

A force that pulls objects toward each other

### 2 things that effect gravity

Both Mass and distance.
(two things that effect _____)

### Net force

Combination of all forces acting on an object

### Balanced forces

Equal forces acting on an object in opposite directions

### Unbalanced forces

Whenever a net force is acting on an object

### Friction

A force that two surfaces exert on each other

### Static Friction

A force that acts on objects not moving

### Sliding friction

A force when objects slide over each other

### Rolling friction

Force when object rolls across surface

### Fluid friction

when a solid object moves through liquid

Example:

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