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15 Cards in this Set
- Front
- Back
force
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A push or a pull on an object.
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F = m x a
Force = mass x acceleration |
formula for calculating force
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velocity
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speed with a direction
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acceleration
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The change in an object's speed, direction, or both. This can be an increase OR a decrease in speed.
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balanced force
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When the forces acting upon an object from opposite directions are equal.
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net force
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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.
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F/a = m
Force/acceleration = mass |
formula for calculating mass
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F/m = a
Force/mass = acceleration |
formula for calculating acceleration
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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.
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Newton's 2nd Law of Motion
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An object will move in the direction caused by the greater (larger) force.
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Newton's 3rd Law of Motion
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For every action, there is an equal and opposite reaction.
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Physical Change
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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.
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Chemical Change
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This is the result of a reaction and creates a new object.
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Change in State
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This is a physical change which occurs when matter changes between the 3 states of matter (solid, liquid, & gas).
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Burns, rusts, creates heat
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Key words that indicate a chemical change.
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