Question

С каким ускорением движется гоночный автомобиль,если его скорость за 15 секунд увеличивается со 36 км/ч до 72 км/ч?

Answer 1

A = (v - v0)/t

a = (20 - 10)/15 ≈ 0.7 м/с²

Answer 2

Calculating Acceleration of a Racing Car

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

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

Given: Initial velocity (u) = 36 km/h Final velocity (v) = 72 km/h Time (t) = 15 seconds

Using the formula, we can calculate the acceleration:

Change in Velocity (Δv) = v - u

Change in Velocity (Δv) = 72 km/h - 36 km/h = 36 km/h

Converting Change in Velocity to m/s:

1 km/h = 0.277778 m/s

Change in Velocity (Δv) = 36 km/h * 0.277778 m/s = 10 m/s

Now, we can calculate the acceleration:

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

Acceleration (a) = 10 m/s / 15 s

Acceleration (a) = 0.6667 m/s^2

Therefore, the acceleration of the racing car is 0.6667 m/s^2.