-A simple machine makes a job easier either by changing the force or changing the distance.
-Design and evaluate a simple machine to launch a marshmallow.
Simple Machines website
TOPIC: Forces and Work
-Work is the use of force to move an object through a distance.
Forces-Gravity and Friction
L.O. Friction, gravity, and magnetism are three forces that cause objects to move, stop, or change direction.
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