26 terms

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

Unit for Acceleration

m/s2

Unit for net force

newtons

Unit for Mass

kg

Newton's Third Law

For every action there is an equal and opposite reaction

Momentum

Mass x Velocity

Unit for Momentum

kg x m/s

Unit for Velocity

m/s

Conservation of Momentum

Momentum is always conserved unless acted upon by an outside force

Force

A push or pull

2 Characteristics of force

Depends Direction and Magnitude

(2 characteristics of ____)

(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 _____)

(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