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8th Science U4 L2
Definition | Term |
---|---|
a push or pull exerted on an object in order to change the motion of the object;has size and direction | force |
a set of forces on an object that cancel one another out so that there is no overall force on the object; the combined force is the same as zero force; will not cause a change in the motion of an object | balanced forces |
the combination of all of the forces acting on an object | net force |
the SI unit for force (symbol, N) | newton |
a set of forces exerted on an object that change the motion of that object; the combined force has size and direction; needed to made an object start moving, speed up, slow down, or change direction | unbalanced forces |
a quantity that has both size and direction | vector |
the speed of an object in a particular direction | velocity |