英文数学(速度,一定要快）The braking distance(d metres)of a truck is proportional to the square of its speed(Vkm/h).If d ＝10,when v=36,calculate(a) d when v = 60(b)v when d=144 帮忙做出并要有过程和解释

英文数学(速度,一定要快）
The braking distance(d metres)of a truck is proportional to the square of its speed(Vkm/h).If d ＝10,when v=36,calculate
(a) d when v = 60
(b)v when d=144
帮忙做出并要有过程和解释