19 terms

affect acceleration

mass and force

Newton's Second Law

connects force, mass and acceleration

friction

force that opposes motion when two surfaces touch

microwelds

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

gravitation

two objects exert an attractive force on each other

gravity

long-range force that gives the universe its structure

same

all objects fall at the ________ acceleration regardless of mass

weight

gravitational force on an object

decreases

weight ___________ as an object moves away from Earth

projectile

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

momentum

related to how much force it takes to move an object