Alvin and Theodore race across a parking lot 451 cm long. Alvin travels at 19.28 cm/s and Theodore at 12 cm/s. When the Alvin crosses the finish line, how far behind is Theodore?

explanation:

newton's third law, for every action there is an equal and opposite reaction.

an energy transformation flow diagram is shown

where is it ?

there are no atoms

the answer is c. the lower legs are levers, and the knees are fulcrums. the ankles hold the loads.