26 terms

# 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
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 ____)
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