Speed = Distance / Time. HELP!! Basic grade school math. Hi, I am not super good in math so I really need some help with this math problem. I just got an unfair speeding ticket and I need to prove that the officer's speed calculation was incorrect. I am pretty sure this will be very simple for the rest of you. I was traveling 65 miles per hour for 3 miles, this took 2 mins and 46 seconds as calculated by this website. http://www.gazza.co.nz/distance.html The officer was from a stop and he started chasing after me claiming that I was speeding (limit was 65mph). He used his own speed to determine what my speed was. Now, if he went from a complete stop, and drove 3 miles in 2 mins and 46 seconds, how fast was he travelling when he caught up to me?? Please help. Maybe you can show the calculation as well so I can show the judge. Thank you very much.