Question

Автомашина, скорость которой равна 6 м/с тормозит и через 2 секунды останавливается на красный свет светофора. чему равна проекция ускорения на направление движения автомашины? результат округли до сотых. ​

Answer 1

Дано:

vo= 6 м/с

v= 0 м/с

t= 2 c

__________

a-?

Розв'язок:

$a = \frac{v - vo}{t}$

$a = \frac{0 - 6}{2} = - 3м/с {}^{2}$

Відповідь: а= -3 м/с²

Answer 2

Calculation of Acceleration Projection

To calculate the projection of acceleration on the direction of motion of the car, we need to determine the change in velocity and the time interval.

Given: - Initial velocity (u) = 6 m/s - Final velocity (v) = 0 m/s (since the car comes to a stop) - Time interval (t) = 2 seconds

Acceleration (a) can be calculated using the formula:

a = (v - u) / t

Substituting the given values:

a = (0 - 6) / 2

Simplifying the equation:

a = -6 / 2

a = -3 m/s^2

The negative sign indicates that the car is decelerating or slowing down.

Therefore, the projection of acceleration on the direction of motion of the car is -3 m/s^2.