Question

ФИЗИКА 9 КЛАСС ПОМОГИТЕ!!!! Автомобиль от остановки двигался с ускорением 2 м/с2. Вычислите время, за которое он пройдёт один км пути. Ответ высчитать в СИ, округлить до целого числа и записать только числом.

Answer 1

s==gt; t= = 32 c

вот ответ

Answer 2

Calculation of Time to Travel One Kilometer

To calculate the time it takes for the car to travel one kilometer, we need to use the equation of motion:

s = ut + (1/2)at^2

Where: - s is the distance traveled (1 kilometer in this case) - u is the initial velocity (assumed to be 0 since the car starts from rest) - a is the acceleration (given as 2 m/s^2) - t is the time taken

We can rearrange the equation to solve for t:

t = sqrt(2s/a)

Substituting the values, we have:

t = sqrt(2 * 1000 / 2) = sqrt(1000) = 31.62 seconds

Therefore, it will take approximately 31.62 seconds for the car to travel one kilometer.

Please note that this calculation assumes constant acceleration and neglects factors such as air resistance and changes in acceleration during the motion.