No, it takes more than double the time.
It probably takes the same amount of time for the driver to react - though given that at double the speed you are passing twice as many things outside, your reaction time may be affected. The kinetic energy of the car increases as the square of the velocity and this must be reduced to zero when you have stopped. So the relationship is non-linear.
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The time taken depends on the speed at which the journey is undertaken. And the speed depends on a number of factors. Amongst these are the mode of transport, road conditions including weather, speed limits, traffic, whether or not the journey is non-stop.
Time = Distance/Speed so it would take 1700/82 = 20.73 hours (approx) assuming that the average speed of 82 mph could be sustained for that length of time. At an average speed of 82 mph, the answer implies no stop for rest or fuelling - quite an unrealistic assumption.
ave speed does not care if you have stopovers or not. ave speed = total distance / total time
The time taken depends on the speed at which the journey is undertaken. And the speed depends on a number of factors. Amongst these are the mode of transport, road conditions including weather, speed limits, traffic, whether or not the journey is non-stop.
The time taken depends on the speed at which the journey is undertaken. And the speed depends on a number of factors. Amongst these are the mode of transport, road conditions including weather, speed limits, traffic, whether or not the journey is non-stop.