Question 1013143
We know that 60 mph = 88 feet per sec (this can be shown easily enough).
Then we have a proportion:
{{{60/88 = 85/x}}}
and we cross-multiply to get
60x = 7480
x = 124.7 feet per sec
Now multiply that by 1.5 sec and get
187 feet
(This is not realistic...the average alert driver reacts in about 0.15 seconds, not 1.5)