Question

Тело, двигаясь со скоростью 20 м/с, останавливается через 10 с. Каково ускорение тела? с краткой записью Скажите пж скину 30 балов​

Answer 1

А=(u конечное - u начальное)/t, a = –2м/с^2

Answer 2

Calculation of Acceleration

To calculate the acceleration of an object, we can use the formula:

Acceleration (a) = Change in Velocity (Δv) / Time taken (Δt)

In this case, the object is initially moving with a velocity of 20 m/s and comes to a stop after 10 seconds. The change in velocity (Δv) is the final velocity minus the initial velocity. Since the object comes to a stop, the final velocity is 0 m/s. Therefore, the change in velocity is:

Δv = 0 m/s - 20 m/s = -20 m/s

The time taken (Δt) is given as 10 seconds.

Now, we can substitute these values into the formula to calculate the acceleration:

Acceleration (a) = -20 m/s / 10 s = -2 m/s²

Therefore, the acceleration of the object is -2 m/s².

Please note that the negative sign indicates that the object is decelerating or slowing down.

I hope this helps! Let me know if you have any further questions.