Two balls m1 = 2kg, m2 = 1kg are moving towards each other with speeds V1 = 1m / s and V2 = 2m / s, respectively.

Two balls m1 = 2kg, m2 = 1kg are moving towards each other with speeds V1 = 1m / s and V2 = 2m / s, respectively. Consider a blow absolutely inelastic. After hitting, the speed will be equal to ..

After a non-elastic collision, the bodies will move as a whole. Moreover, the movement will be directed to where the body with the greatest impulse moved.

Therefore, we define the impulse of the first body: with a mass of 2 kg and a speed of 1 m / s:

p1 = 2 * 1 = 2 kg * m / s.

Let’s do the same for the second body with a mass of 1 kg and a speed of 2 m / s:

p2 = 2 * 1 = 2 kg * m / s.

It turns out that the momentum of both bodies is equal. Consequently, in a collision, the total impulse of the system will be equal to:

2 – 2 = 0 kg * m / s.

Both bodies will not move.