8th grade- Unit 6.4
Terms in this set (18)
a quantity that has a magnitude and a direction; shown by an arrow representing a force in one direction
amount of something; how large or small something is, represented by the length of vector arrow.
The equal and opposite forces always present when two objects are in contact. The objects push together equally or pull apart equally. For example, a book on a table or a balloon on a string. Shown as a dot at the contact of two objects, with equal and opposite vector arrows.
A push or a pull
When the sum of the forces on an individual object add up to zero.
When the sum of the forces on an individual object do not add up to zero.
The amount of matter in an object.
Variable/condition that is purposely changed in the investigation.
The measured results of the investigation.
Variables/conditions that are kept the same in an investigation.
A "downward" force exerted on everything that has mass by the earth.
Standard of Comparison
Something used to judge or measure against (in an investigation). Also sometimes referred to as a control group.
An event in which two (or more) bodies exert forces on each other for a period of time.
An investigation or experiment in which the variables are carefully chosen and controlled. A fair investigation can be trusted to yield accurate results.
The change in motion due to the object's changing speed.
An object which is not accelerating. Constant motion can mean no motion, or motion that is not changing in speed or direction.
Characteristics of a desired solution that are used to compare different solutions and determine which best solves the problem. (What you would like to have)
Things you MUST do to solve the problem, if not met the solution is not acceptable (what you HAVE to have)
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