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Motion and Forces

force a push or pull that can change the motion of an object
gravity a force of attraction (pull) between any two objects in the universe
balanced forces equal and opposite in direction; cause no change in motion
unbalanced forces unequal and do cause a change in motion
net force overall forces acting on an object
mass and distance two factors that affect gravity; more mass = more gravity, closer together = stronger gravitational pull
magnetism force of attraction or repulsion by magnets; N-S attract, N-N and S-S repel
magnetic field invisible forces that can be seen with iron filings; show that magnets are strongest at the poles (ends)
motion a change in an object's position or location
Newton the unit for force; represented with an N
Newton's 1st Law the law of inertia; objects in motion stay in motion and objects at rest stay at rest, unless acted upon by an outside force
Newton's 2nd Law Force = mass x acceleration
Newton's 3rd Law for every action there is an equal and opposite reaction
velocity speed in a given direction
inertia the tendency of an object to resist a change in motion; objects will keep doing what they are doing, unless acted upon by an outside force
Created by: koehlers