Ontario Highway Traffic Act

Hi Im new to this site, last friday i got a ticket for doing 87 in a 50. The officer clocked me going down a hill with my cruse control set at 52. gravity sped my car up to 62 by the botem of the hill. I know this because when ever i start my car my phone logs both the gps speed and the speed on the obd port and time stamps every second the car is ...