You have to know the decelerating force acting on the car (say the brakes).
time taken = velocity change divided by deceleration (negative acceleration).
so
if you can measure the distance it took to stop you can find the negative acceleration a:
a = velocity change squared divided by 2x distance measured.
Your velocity change = 20 mph - 0 mph = 20 mph = 29.333 feet per second.
Units must all be consistant i.e. feet and seconds.
8.46 hours non-stop
16 hours, if you do it non-stop
38 hours, if you don't stop.
If you drove non-stop at a constant speed of 70 mph, it would take about 1 hour and 40 minutes.
If you drove non-stop at a constant speed of 75 mph, it would take about 1 hour and 45 minutes.
6.8 hours if you don't stop to eat, take restroom breaks, etc.
If you could drive non-stop at a constant speed of 70 mph, it would take 1 hour and 25 minutes.
It depends on how fast you are driving . At 60 miles per hour it would take ( 4 minutes ) to drive 4 miles
If your not gonna stop, 12.166666667. so about 12 hours and 10 minutes.
If you were driving 65 miles per hour how long will it take you to drive 310 miles?
How long does it take to travel 113 miles at 75 miles per hour?
330/90 = 32/3 hours.Realistically, you ought to crank in another 1/2 hour for the speeding stop.