At the end of the laps, the runner's displacement is zero.
"<em>The different types of radiation are defined by the the amount of </em><em>energy</em><em> found in the photons. Radio </em><em>waves</em><em> have photons with low energies, microwave photons have a little </em><em>more energy</em><em> than radio </em><em>waves</em><em>, infrared photons have still </em><em>more</em><em>, then visible, ultraviolet, X-rays, and, the </em><em>most</em><em> energetic of all, gamma-rays.</em>"
Answer:
sorry I don't really know :P
Explanation:
D.) Rubbing your hands together
Hope this helps! ( brainleist??)
A gravity and or D angular momentum