I wanna know sum tea so come and spill it :
7(8)

when my dad and mom broke up for the first time because my dad was cheating they ended up going to different people and to different states then my dad started missing her and came back AND MY MOM TOOK HIM BACK she had a perfect bf at the time to but then he invited her to a monster truck show and purposed but then dropped the ring and accused my mom for not wanting to marry him and he forced marrige on her and then did everything his way for the wedding and honeymoon, they are in different states now and the girl he cheated with is dead and now his first daughter hates my dad

Explanation:

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.