Question

How many feet of stopping distance does a vehicle have if driving at 20 mph?

Answer 1

The stopping distance for a vehicle traveling at 20 mph is approximately 57.14 feet.

Step-by-step explanation:

The stopping distance of a vehicle depends on various factors, including the speed at which it is traveling.

To calculate the stopping distance for a vehicle traveling at 20 mph, we need to consider the deceleration rate. Different road conditions have different deceleration rates.

For example, on dry concrete, a car can decelerate at a rate of 7.00 m/s².

Therefore, to find the stopping distance, we can use the formula:

Stopping distance (in feet) = (Initial speed (in mph)²) / (2 * deceleration rate)

Plugging in the values, we get:

Stopping distance = (20²) / (2 * 7.00) = 57.14 feet.

Answer 2

You would need the car speed and kinetic friction coefficient to solve this, so there isn’t enough information to get a number. I’m just gonna derive an equation:

(static friction coefficient)(9.8)=(mass of car)(acceleration of car)