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affect acceleration

mass and force

Newton's Second Law

connects force, mass and acceleration


force that opposes motion when two surfaces touch


where surfaces bump together

static friction

occurs between surfaces that are not moving

sliding friction

occurs between surfaces that are moving

rolling friction

between a rolling object and the surface

air resistance

opposes the force of gravity

terminal velocity

object falls at constant speed


two objects exert an attractive force on each other


long-range force that gives the universe its structure


all objects fall at the ________ acceleration regardless of mass


gravitational force on an object


weight ___________ as an object moves away from Earth


horizontal and vertical velocity, follows a curved path

centripetal acceleration

acceleration toward the center of a curved path

Newton's Third Law

for every action there is an equal and opposite reaction

rocket propulsion

based on Newton's third law


related to how much force it takes to move an object

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