Question

Два шара, имеющие массу 1 и 0.5 кг движутся навстречу друг другу. Определите скорость совместного движения шаров после абсолютно неупругого удара, если их скорости до удара равны 20 и 10 м/с, соответственно..

Answer 1

Вот держи сам ее решал в школе и получил 4 сам просто при писании допустил 

Answer 2

Calculation of the Combined Velocity after an Inelastic Collision

To determine the combined velocity of the two spheres after an inelastic collision, we can use the principle of conservation of momentum. According to this principle, the total momentum before the collision is equal to the total momentum after the collision.

The momentum of an object is calculated by multiplying its mass by its velocity. In this case, we have two spheres with masses of 1 kg and 0.5 kg, and velocities of 20 m/s and 10 m/s, respectively, before the collision.

Using the conservation of momentum equation, we can calculate the combined velocity after the collision:

m1 * V1 + m2 * V2 = (m1 + m2) * V

Where: - m1 and m2 are the masses of the spheres - V1 and V2 are the velocities of the spheres before the collision - V is the combined velocity of the spheres after the collision

Substituting the given values into the equation:

1 kg * 20 m/s + 0.5 kg * 10 m/s = (1 kg + 0.5 kg) * V

Simplifying the equation:

20 kg·m/s + 5 kg·m/s = 1.5 kg * V

25 kg·m/s = 1.5 kg * V

Dividing both sides of the equation by 1.5 kg:

V = 25 kg·m/s / 1.5 kg

Calculating the result:

V ≈ 16.67 m/s

Therefore, the combined velocity of the two spheres after the inelastic collision is approximately 16.67 m/s.