Physics Vocabulary

acceleration

• the rate of change in velocity; can mean speeding up, slowing down, or changing direction

air resistance

• the frictional force between air and moving objects

balanced force

• forces that are equal, but in opposite direction

force

• a push or pull measured in newtons

friction

• a force that opposes motion between two objects that are touching and causes an object to slow down or come to a stop

gravitational potential energy

• energy an object poses because of it's position in a gravitational pull

gravity

• an attractive force that exists between all objects that have mass, the greater the mass, the greater the gravity between the objects

inertia

• the tendency of an object to resist motion

kinetic energy

• energy in motion

potential energy

• energy an object has due to it's position

thrust

• a pushing force that propels objects in the opposite direction

unbalanced forces

• forces that are unequal and cause an object to accelerate

velocity

• speed in a particular direction

Newton's Laws

Newton's first law: (inertia)

• an object at rest tends to stay at rest, and an object in motion tends to stay in motion until an unbalanced force acts in motion

Newton's second law: (F=MxA)

• It requires more force to move a larger mass

Newton's third law: (action-reaction)

• for every action, there is an equal and opposite reaction

Speed=Distance+Time

Thank you for watching, definitions provided by, "Forces and Motions Vocabulary"