Question

Чему равно ускорение автомобиля, если через 2 мин после начала движения из состояния покоя он приобрел скорость 72 км/ч?

Answer 1

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Answer 2

Calculating the Acceleration of the Car

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

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

Given that the car starts from rest and reaches a speed of 72 km/h after 2 minutes, we can convert the final velocity to m/s and the time to seconds for consistency in units.

1. Converting the Final Velocity: - 72 km/h = 20 m/s.

2. Converting the Time: - 2 minutes = 120 seconds.

Now, we can calculate the acceleration using the formula:

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

Acceleration (a) = (20 m/s - 0 m/s) / 120 s

Acceleration (a) = 20 m/s / 120 s

Acceleration (a) = 0.167 m/s^2

Therefore, the acceleration of the car is 0.167 m/s^2.