Question

Дано m=5тон время= 2 секунды S=20метров найти работу

Answer 1

 Находим скорость: v = S/t

Изменение импульса тела равно импульсу силы:

mv = Ft,   mS/t = Ft,    F = mS/t^2 = 25 кН

Работа этой силы на перемещении S:

А = F*S = mS^2/t^2 = 500 кДж.

P.S. Возможно, я и неправ....уж больно непонятно условие..

Answer 2

Calculation of Work

To calculate the work done, we can use the formula:

Work (W) = Force (F) × Distance (d)

In this case, we are given the mass (m) as 5 tons, the time (t) as 2 seconds, and the distance (S) as 20 meters. We need to find the work done.

To find the force (F), we can use Newton's second law of motion:

Force (F) = mass (m) × acceleration (a)

Since we are not given the acceleration, we can assume that the object is moving at a constant speed, which means the acceleration is zero. Therefore, the force is also zero.

Since the force is zero, the work done is also zero. This means that no work is done in this scenario.

Conclusion

In the given scenario, where the mass is 5 tons, the time is 2 seconds, and the distance is 20 meters, no work is done because the force is zero.