That depends on road conditions, tire conditions, and other factors.
A good rule of thumb, however, it to follow no closer than 2 seconds behind the vehicle in front of you.
About 73.3 feet per second at 50 mph.
Most cars can stop from 60 mph in about 100 feet or so. If the relationship is linear then a car should stop from 30 mph in about 50 feet.
Thinking distance is the distance a vehicle travels while the driver reacts to a stimulus, typically calculated as a function of speed; for example, at 20 mph it's about 6 feet, at 30 mph it's around 9 feet, at 40 mph it's approximately 12 feet, at 50 mph it's about 15 feet, and at 60 mph it's roughly 18 feet. Braking distance, which is the distance required to stop once brakes are applied, increases significantly with speed; at 20 mph it's around 20 feet, at 30 mph it's about 45 feet, at 40 mph it's approximately 80 feet, at 50 mph it's about 125 feet, and at 60 mph it's roughly 180 feet. Together, thinking and braking distances contribute to the overall stopping distance, which increases with speed.
Stopping Distance = about 56.25 feet.
Stopping distances are measured in feet not in seconds. At 40 mph you're traveling 58.7 feet per second. The average driver reaction time is about 3/4 second which equates to 44 feet. After applying the brakes it will take approximately 82 feet to stop the vehicle. The total stopping distance for a car traveling 40 mph will be 126 feet when you include reaction time and actual stopping distance of the vehicle. If you divide 126' x 58.7' which is the distance traveled per second you get 2.14 seconds. This is assuming you're paying attention and have average reaction time while driving.
175 feet. The Oregon Drivers Handbook calculates it at closer to 240 feet. (of course many factors can make it more or less distance.)
50 Mph X 3.5 = 175 feet = 53.3 metressee http://www.hintsandthings.co.uk/garage/stopmph.htm for explanation and various equations
About 73.3 feet per second at 50 mph.
55 feet
The stopping distance when driving at 50 mph can vary based on factors such as road conditions and vehicle weight. As a rough estimate, the average stopping distance at 50 mph is around 175-225 feet. It is important to maintain a safe following distance and be prepared to brake gradually to avoid collisions.
110 feet
Stopping Distance = 15 feet
228ft
Most cars can stop from 60 mph in about 100 feet or so. If the relationship is linear then a car should stop from 30 mph in about 50 feet.
Stopping Distance = about 146.25 feet.
depending on the hp/weight and traction, street cars 35-50mph
The total stopping distance for a car travelling at 30 mph on a dry surface is about 75 feet. However, you may wish to note that in most countries, driving a car on the pavement is illegal.