Forces that Affect Motion
What is a change in position
Force
Who discovered the Laws of Motion
Sir Isaac Newton
What does an electromagnet have?
Electromagnetic force
What is the force of gravity on an object?
weight
What is the base of a building?
foundation
What is movement resulting from force?
Work
What is a substance that minimizes friction?
Lubricant
What do opposite sides of a magnet do?
Attract
What gives an object more gravity?
more mass
What is the skeleton of a building?
frame
What forces don't allow work to be done?
Balanced Forces
What property of matter makes it resist change in motion?
Inertia
What do like sides of a magnet do?
Repel
What is a device that makes work easier?
machine
What is the part in a lever that holds and balances weight?
fulcrum
What forces allow work to be done?
Unbalanced forces
An object at rest will do what?
Stay at rest unless acted upon by an unbalanced force
What acts like a giant electromagnet?
The Earth
What is the point of balance in an object that represents the effects of gravity on all its particles?
center of gravity
What does a pulley do?
makes lifting things easier
What is force that works against motion along a surface?
Friction
What machine can help overcome friction?
wheel and axle
What does "Polarity" mean?
Having 2 opposite sides that work differently
The earth pulling the moon
The sun holding the planets
What tool is a type of inclined plane?
a screw