Question

Two equal masses m₁ and m₂ moving along the same straight line with velocities +3m/s and -5m/s, respectively. collide elastically. Their velocities after the collision will be respectively​

Answer 1

We know that in an elastic collision,

m1u1 + m2u2 = m1v1 + m2v2.

The masses are equal, so m1=m2 = m.

After the collision, the two masses will stick together, so they will move with a common velocity that we take as v.

Now, Substituting the values in formula, we have -

m3 + m(-5) = (m + m)v

-2m = 2mv

-2m/2m = -1 m/s = v.

$\huge\sf{\underline{\underline{\:\:\:\:spyXsenorita \: }}}$

Answer 2

m₁ and m₂ moving along the same straight line with velocities +3m/s and -5m/s, respectively. collide elastically. Their velocities after the collision will be respectively