<span>One result of a chemical change is letter B: A
new material is formed. Let us take for example on the paper being burned to
ashes. There is a clear use of heat or thermal energy as heat is transferred
from the medium to the paper, however, no energy is created, it only
transformed to other energy. Materials may change but it could also happen to
physical change like ice (which was in solid phase) turning or evaporating to
water (liquid phase).</span>
Mechanical or Electromagnetic
If he is jumping you are adding force which means that you will be falling twice as fast
I only doing this for points, but i think its c
