80 miles per hour = 35.7632 meters per second.
(divide the speed by 2.237 )
there are more correct choices on the list than incorrect ones.
the inverse square law applies to
-- the intensity of sound from a small source
-- the gravitational force
-- the intensity of light from a small source
-- the electric force from a point charge or a small charge.
it doesn't apply to the magnetic force.
your answer is gravity
hope this could : )