Question

Вагон, масса которого 5 т, движется со скоростью 4 м/с. Под действием некоторой силы его скорость возрастает до 9 м/с, и при этом вагон проходит расстояние 65 м. Какова величина силы , действующей на него?

Answer 1

Ответ: 2500Н
там Ньютоны, а не кг

Answer 2

Calculating the Force Acting on the Wagon

To calculate the force acting on the wagon, we can use the equation:

F = m * a

Where: - F is the force - m is the mass of the wagon - a is the acceleration

First, let's calculate the initial acceleration of the wagon using the initial velocity and the distance traveled.

Given: - Initial velocity, V₀ = 4 m/s - Final velocity, V = 9 m/s - Distance traveled, S = 65 m

We can use the equation: V² = V₀² + 2aS to find the initial acceleration, a.

Using the provided values: 9² = 4² + 2a*65

Solving for a: 81 = 16 + 130a 130a = 81 - 16 130a = 65 a = 65 / 130 a = 0.5 m/s².

Now that we have the acceleration, we can calculate the force acting on the wagon using the mass and acceleration.

Given: - Mass of the wagon, m = 5 tons = 5000 kg - Acceleration, a = 0.5 m/s²

Using the equation F = m * a: F = 5000 * 0.5 F = 2500 N

So, the force acting on the wagon is 2500 N.

Therefore, the magnitude of the force acting on the wagon is 2500 N.