If you drive at 100km per hour how long will it take to get Melbourne from Sydney?

You cannot drive from Sydney to Melbourne at 100km per hour. The distance between Sydney and Melbourne is approximately 875km, so at a speed of 100km per hour it would take approximately 8 hours and 45 minutes to drive non-stop. However, this does not take into account the time it would take to stop for fuel, food, bathroom breaks, and traffic. A more realistic travel time would be closer to 10-12 hours.