If I am going 85mph for 1/4 Mile, how long did it take for me to travel that 1/4 mile?

Question

I was traveling on a flat surface ( freeway ) and was pulled over by a police officer. I was told I was doing 85mph but not by radar. He told me he checked my speed by odometer and followed me for 1/4 mile. I am trying to find out how much time it takes to travel 1/4 mile at 85mph?

Answer 1

Time = distance/speed

0.25/85 = 0.002941 hours = 10.6 seconds

Answer 2

10.6 seconds to go 1/4 mile @ 85mph

12.9 seconds to go 1/4 mile @ 70mph so its pretty easy for him to tell you were speeding.

Answer 3

10.56 seconds! He's have to have a pretty accurate stopwatch!

Shaun