Question

Определите ускорение автомобиля если при разгоне за 15с он приобретает скорость 54 км/ч.Какой путь он за это время проходит?

Answer 1

А=V/t
54 км/ч=15м/с
a=15/15=0 м/с в квадрате 

Answer 2

Calculating Acceleration and Distance Traveled

To calculate the acceleration of the car, we can use the formula acceleration = (final velocity - initial velocity) / time. Given that the car reaches a speed of 54 km/h in 15 seconds, we can calculate the acceleration using the provided formula.

The distance traveled by the car during this time can be calculated using the formula distance = initial velocity * time + 0.5 * acceleration * time^2.

Let's calculate the acceleration and the distance traveled step by step.

Calculating Acceleration

Using the formula acceleration = (final velocity - initial velocity) / time: - Initial velocity (V0) = 0 (assuming the car starts from rest) - Final velocity (V) = 54 km/h - Time (t) = 15 seconds

Acceleration = (54 km/h - 0 km/h) / 15 s = 3.6 km/h/s [[6 #]].

Calculating Distance Traveled

Using the formula distance = initial velocity * time + 0.5 * acceleration * time^2: - Initial velocity (V0) = 0 (assuming the car starts from rest) - Time (t) = 15 seconds - Acceleration (a) = 3.6 km/h/s

Distance = 0 * 15 + 0.5 * 3.6 * 15^2 = 0 + 0.5 * 3.6 * 225 = 0 + 405 = 405 km [[6 #]].

The car's acceleration is 3.6 km/h/s, and it travels a distance of 405 kilometers during the 15-second acceleration period.