I am trying to understand your question and interpret it as meaning: How does the reaction time affect the breaking distance of a car at different speeds. The simple answer is that the reaction time "thinking distance" does not change, but the distance a car travels at higher speeds changes during that time does. For example: If you are too close to the car in front of you and they slam on their breaks, if you are both going fast enough, by the time you did your "thinking time" you would be crashing into their rear end.
At 20 mph, the average thinking distance is around 20 feet, while the braking distance is approximately 20 feet as well. Therefore, the overall stopping distance for a vehicle traveling at 20 mph would be around 40 feet.
On dry pavement in the average car it will take 60 ft of thinking about it, & 180 ft of braking for a total of 240 ft. Double the braking distance on wet pavement for a total of 420 ft. On snow it is anyone's guess.
The answer depends on compared to what? Compared to driving at 50 km per hour, the braking (not breaking!) distance would be longer, compared to 200 km per hour it would be longer.
The total stopping distance includes the perception distance, reaction time and braking distance. The distance that your vehicle is traveling and then pressing on the brake after seeing a hazard, is the total stopping distance.
Hi there! Assuming that the deceleration (or negative acceleration, if you will) is constant and the same in both cases, you can use a special kinematic formula to solve the problem. The formula follows: (final velocity)^2 = (initial velocity)^2 + [ 2 * (deceleration) * (braking distance) ] Rearranged to our needs the formula reads: braking distance = [1/2] * -(initial velocity)^2 / (deceleration) * this equation assumes that the final velocity is zero If the initial speed were doubled then the general formula would read: braking distance = 2 * -(initial velocity)^2 / (deceleration) NOTICE that the two equations are the exact same except for the leading coefficients. 1/2 is assocaited with the braking distance of the normal velocity while 2 is assocated with the breaking distance of the doubled velocity. Since 2 is four times larger than 1/2, this leads us to the conclusion that the breaking distance for an object traveling at double a certain velocity would be 4x greater than the breaking distance of the object moving at the "regular" velocity.
Tyre surface: If the tyre is new, it will have surface with depressions which will offer more friction compared to old tyre whose surface-depressions are worn out and it is more flat, so it offers less friction. Therefore, new tyre will have less stopping distance, as force of friction is more. Thinking distance is affected neither by friction between tyre and road, nor by friction between brake and tyre. If road has a wet surface, it has less friction so the vehicle will skid farther, and vice versa. The braking force, i.e, friction between tyre and brake is unaffected by road condition or tyre surface. Hence the distance the vehicle travels WHILE retarding due to "braking force", is not same as stopping distance, because even when the wheels are stopped rotating due to braking force, the car will skid a little distance- this total distance is the stopping distance.
A projectile thrown with a greater velocity would travel a greater distance. Velocity is not just speed but direction as well.
A projectile thrown with a greater velocity would travel a greater distance. Velocity is not just speed but direction as well.
because there is less friction between the tyre and the road because of the water in between
The braking distance for an Audi A6 decelerating from 100 mph to 0 mph can vary based on factors such as road conditions, tire grip, and braking system efficiency. Generally, a rough estimate for a passenger vehicle is about 400 feet (or 120 meters) under optimal conditions. However, this distance can increase significantly in adverse conditions or with less effective braking systems. For precise calculations, specific vehicle data and conditions would be needed.
Yes, friction is essential for braking as it helps to slow down a moving vehicle by creating a resistance force between the brake pads and the wheels. The greater the friction between the brake components, the more effective the braking force will be.
If you push on the center there is less distance to the hinge. The greater the distance from the hinge, the greater the torque to open it for the same force ( force x distance = torque)