Question

A car acceleration from rest to 108 km/h in 6 seconds. What is the acceleration of this car ?

Answer 1

Ответ:

5m/s^2

Объяснение:

108km/h = 30 m/s

a= 30/6 = 5m/s^2

Answer 2

To find the acceleration of the car, we can use the formula:

Acceleration (a) = Change in velocity (Δv) / Time (t)

Given: Initial velocity (u) = 0 km/h (since the car starts from rest) Final velocity (v) = 108 km/h Time (t) = 6 seconds

First, we need to convert the velocities from km/h to m/s because the SI unit of acceleration is meters per second squared (m/s²).

1 km/h = 0.27778 m/s

Converting the velocities: Initial velocity (u) = 0 km/h = 0 m/s Final velocity (v) = 108 km/h = 108 * 0.27778 m/s ≈ 30 m/s

Now we can calculate the acceleration:

Acceleration (a) = (Final velocity - Initial velocity) / Time = (v - u) / t = (30 m/s - 0 m/s) / 6 s = 30 m/s / 6 s = 5 m/s²

Therefore, the acceleration of the car is 5 m/s².