Motion and Forces

a push or pull that causes an object to move

• force
• mass
• balance
• speed

pushes or pulls that result from direct touching of objects

• non-contact force
• contact force
• mass
• velocity

pushes or pulls that result without direct touching of objects

• contact force
• non-contact force
• velocity
• acceleration

motion is relative to something else

• point of reference
• newton's law
• speed
• distance

the ratio of distance covered per unit of time

• distance
• velocity
• speed
• force

the amount of space between two things

• speed
• velocity
• mass
• distance

change in speed and/or direction

• accelerate
• distance
• mass
• contact force

two forces acting on an object in opposing directions are of equal strength (balanced)

• accelerate
• zero net force
• non-zero net force
• Newton's Third Law

two forces acting on an object in opposing directions that are unequal in strength (unbalanced)

• zero net force
• non-zero net force
• mass
• velocity

objects at rest stay at rest and objects in motion stay in motion unless acted on by an outside force (unbalanced)

• Newton's First Law
• Newton's Second Law
• Newton's Third Law
• Mr. Smith's Law of Motion