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## Homework Statement

Anthony and Sissy are participating in the "Roll-a-Rama" roller-skating dance championship. While 75kg Anthony roller-skates backwards at 3m/s, 60kg Sissy jumps into his arms with a velocity of 5m/s in the same direction.

m1= 75kg

v1= 3m/s

m2= 60kg

v2= 5m/s

v' = ?

## Homework Equations

The inelastic collision equation possibly?

## The Attempt at a Solution

(75kg)(3m/s) + (60kg)(5m/s)= (75kg+60kg)x

225kg*m/s + 300kg*m/s= 135kg(x)

525kg*m/s = 135kg(x)

(525kg*m/s)/135kg = x

3.8m/s= x

Is that correct?