Nine miles per hour.
Either acceleration, average speed, direction, or instantaneous speed.
180 mph
40 minutes. 24 miles is two thirds of 36. Two thirds of an hour is 40 minutes.
33.3333 miles
2 hours 30 minutes.
2 hours 50 minutes.
1 hour 45 minutes
2 hours 15 minutes
Time = Distance/Speed = 30 miles / 40 mph = 30/40 hours = 0.75 hours or 45 minutes.
About 48 minutes. This assumes you travel at a constant speed with no stops.
Approximately 1 hour 40 minutes
Time = Distance/Speed = 60/40 = 1.5 hours or 1 hour 30 minutes