Question

При аварийном торможеннии водитель резко нажал на тормоз и колёса перестали вращаться , с какой скоростью двигался автомобиль,если торможение длилось 8 секунд, а коэффициент трения скольжения 0.3?

Answer 1

Вам надо выполнять? Если да напиши моя сестра напишет

Answer 2

Calculating the Speed of the Car During Emergency Braking

To calculate the speed of the car during emergency braking, we can use the formula:

v = u - (g * μ * t)

Where: - v = final velocity (m/s) - u = initial velocity (m/s) - g = acceleration due to gravity (9.8 m/s^2) - μ = coefficient of sliding friction - t = time (s)

Given: - t = 8 seconds - μ = 0.3 - g = 9.8 m/s^2

Calculation

Using the given values in the formula:

v = u - (g * μ * t)

We can calculate the final velocity of the car during emergency braking.

Solution

v = u - (g * μ * t) v = u - (9.8 * 0.3 * 8) v = u - 23.52

So, the speed of the car during emergency braking would be the initial velocity minus 23.52 m/s.

Conclusion

The speed of the car during emergency braking can be calculated using the given formula. If the initial velocity of the car is known, we can subtract 23.52 m/s from it to find the speed during emergency braking.