Question

While 75-kg Anthony roller skates at 3 m/s, 60-kg Sue jumps into his arms with a velocity of 5 m/s. How fast does the pair go together?

Velocity: m/s

Direction:

Answer 1

inelastic collision

75.3+60.5=(75+60)v'

225+300=135v'

v'=3.8 m/s

direction = positive = right