review physical science

is a friction-like force that opposes the motion of objects that move through the air

the sum of all the forces acting on an object

is the force that oppose the sliding motion of two surfacesthat are touching each other.

an object moves at a constant velocity unless an unbalanced force acts on it.

(no physical changes occur), when the net force iszero.

• Mechanical Equilibrium

• Unbalanced force

• gravitational potential energy

• air resistance

(every action force there is an equal and opposite reaction force)

the measure of the average kinetic energy of the particles that make up the object.

Air resistance depends on

• size

• colour

• shape

• speed

• look

is the sum of kinetic and potential energy of all particles that makeup an object.