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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.
It will have travelled 4*60 = 240 miles
No, they have different meanings.Following distance is the safe distance to follow behind a moving motor vehicle.Stopping distance is the combination of the drivers reaction time to apply the brakes and the time the vehicle takes to come to a halt.
About 6.24 seconds at 45mph to travel 412 feet.
0.5*0.24*72 = 5.88 units of distance per second.
3 seconds
Following distance is typically measured in seconds. A common rule of thumb is the "3-second rule" where you should leave at least 3 seconds of following distance between your vehicle and the vehicle in front of you. To measure this, pick a stationary object on the side of the road, wait for the vehicle ahead of you to pass it, and then count how many seconds it takes for you to pass the same object.
8 seconds
two
When driving, you should always measure your following distance in seconds. A general rule of thumb is to maintain a following distance of at least 3-4 seconds between your vehicle and the one in front of you. This distance allows you enough time to react and brake safely in case of an emergency.
4
a driver behind your vehicle is trying to pass you
3 seconds
In any driving location, it is generally agreed to be safe if you position yourself 3 seconds or more behind the vehicle in front of you.
You should allow at least 4 seconds of following distance when driving a 30-foot vehicle at 55 mph. This provides enough time to react to any sudden changes in traffic ahead and helps prevent rear-end collisions.
The technique used for determining the proper following distance is called the "2-second rule." This technique involves keeping a distance of at least 2 seconds between your vehicle and the vehicle in front of you while driving. This allows for enough time to react to sudden stops or changes in traffic conditions.
Following distance is the space between your vehicle and the vehicle in front of you while driving. Maintaining a safe following distance allows you more time to react to sudden stops or changes in traffic situations, helping to prevent rear-end collisions. The general rule is to keep at least a 3-second distance in good weather conditions, and more in adverse conditions.