Question

Физика! 5. С каким ускорением движется автомобиль по кольцевой дороге радиусом 20м со скоростью 18 км/ч? [3]​

Answer 1

Ответ:

Дано

R=20м

V=18км/ч=5м/с

а-?

а=V²/R

a=25/20

a=1,25м/с²

Answer 2

Calculation of Acceleration

To find the acceleration of the car moving on a circular road with a radius of 20 meters and a speed of 18 km/h, we can use the formula for centripetal acceleration:

Centripetal acceleration (a) = (v^2) / r

Where: - v is the velocity of the car - r is the radius of the circular road

Let's calculate the acceleration using the given values:

Velocity (v) = 18 km/h = 5 m/s Radius (r) = 20 m

Substituting these values into the formula, we get:

a = (5^2) / 20 = 25 / 20 = 1.25 m/s^2

Therefore, the car is moving with an acceleration of 1.25 m/s^2 on the circular road.