Question

Троллейбус за 10секунд прошёл путь 120 метров, какую скорость он преобрёл в конце пути и с каким ускорением он двигался, если начальная скорость равна 10м/с

Answer 1

Нуу, это просто.
Давай, формула для расчёта пути:  S=v0+at^2 /2 считаем ускорение: 120=10*10+a*10^2 /2=100+50a  20=50a; a=0.4
Формула для скорости Vк=Vo+at=10+10*0.4=10+4=14м.с

Ответ: a=0.4м/с2; Vк=14м/с

Answer 2

Calculation of Final Velocity and Acceleration of the Trolleybus

To calculate the final velocity and acceleration of the trolleybus, we can use the equations of motion. Given the initial velocity of the trolleybus as 10 m/s and the distance traveled as 120 meters, we can find the final velocity and acceleration.

Let's assume: - Initial velocity (u) = 10 m/s - Distance traveled (s) = 120 meters - Final velocity (v) = ? - Acceleration (a) = ?

Using the equation of motion:

v^2 = u^2 + 2as

We can rearrange the equation to solve for the final velocity (v):

v = sqrt(u^2 + 2as)

Substituting the given values:

v = sqrt((10 m/s)^2 + 2 * a * 120 m)

Now, let's solve for the final velocity (v) and acceleration (a).

Calculating the final velocity (v): - v = sqrt((10 m/s)^2 + 2 * a * 120 m)

Calculating the acceleration (a): - a = (v^2 - u^2) / (2 * s)

Let's calculate the final velocity and acceleration using the given values.

Final Velocity (v): - v = sqrt((10 m/s)^2 + 2 * a * 120 m) Acceleration (a): - a = (v^2 - u^2) / (2 * s) Please note that without the value of acceleration (a), we cannot determine the exact final velocity of the trolleybus. If you have any additional information or constraints, please let me know, and I'll be happy to assist you further.