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15 Cards in this Set

  • Front
  • Back
force
A push or a pull on an object.
F = m x a
Force = mass x acceleration
formula for calculating force
velocity
speed with a direction
acceleration
The change in an object's speed, direction, or both. This can be an increase OR a decrease in speed.
balanced force
When the forces acting upon an object from opposite directions are equal.
net force
The sum (or total) of the forces acting on an object. If the object is pushed left 3N and right 5N, 5-3= a net force of 2N. If the object is pushed left 3N and left again 5N, 3+5= a net force of 8N.
F/a = m
Force/acceleration = mass
formula for calculating mass
F/m = a
Force/mass = acceleration
formula for calculating acceleration
Newton's 1st Law of Motion
a.k.a. The Law of Inertia
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
Newton's 2nd Law of Motion
An object will move in the direction caused by the greater (larger) force.
Newton's 3rd Law of Motion
For every action, there is an equal and opposite reaction.
Physical Change
Something that happens to an object but doesn't change the chemical make-up of the object. For example, torn paper is still paper. Tearing is this kind of change.
Chemical Change
This is the result of a reaction and creates a new object.
Change in State
This is a physical change which occurs when matter changes between the 3 states of matter (solid, liquid, & gas).
Burns, rusts, creates heat
Key words that indicate a chemical change.