Question

Начальная скорость автомобиля была 12км\ч через 25 с скорость стала 48км\ч вычислите ускорение автомобиля

Answer 1

Vконечн=Vнач+а*t
a=(Vконечн-Vнач)/t=1.44(м/с^2)

Answer 2

Calculation of Acceleration

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

Acceleration (a) = (Final Velocity (v) - Initial Velocity (u)) / Time (t)

Given: - Initial velocity (u) = 12 km/h - Final velocity (v) = 48 km/h - Time (t) = 25 s

Let's substitute the values into the formula:

Acceleration (a) = (48 km/h - 12 km/h) / 25 s

Converting the velocities from km/h to m/s:

Acceleration (a) = ((48 km/h - 12 km/h) / 25 s) * (1000 m/1 km) * (1 h/3600 s)

Simplifying the equation:

Acceleration (a) = ((48 - 12) * 1000) / (25 * 3600) m/s^2

Calculating the acceleration:

Acceleration (a) = 36,000 / 90,000 m/s^2

Acceleration (a) = 0.4 m/s^2

Therefore, the acceleration of the car is 0.4 m/s^2.