Test 2 (Lessons 5, 6, 8, 9, 10, &#038; 11)

Term Definition
Force A push or pull
Balanced Force All forces acting on an object result in the object staying at rest or moving at a constant speed in the same direction.
Unbalanced Force When all forces acting on an object result in a change of motion. SO- if it's moving it changes speed or direction, If it's at rest, it brgins to move.
Unbalanced Force Two people are arm wrestling and one wins. This is an example of what kind of force?
Balanced Force The tortoise walked a steady pace in the race. This is an example of what kind of force?
Simple machines A device that makes work easier to do by changing the amount, direction, or distance of the force.
load The object to be moved by the simple machine.
Effort force The force exerted (used) by the user of the simple machine.
force on the load The force exerted (used) by the
mass The measure of the amount of matter (stuff) in an object.
weight The measure of the amount of gravity pulling on an object.
Point of reference A background of non-moving object in the background used in describing the motion of another object.

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