A rugby player of mass 75 kg, running east at 8.0 m/s, tackles another player of mass 90 kg who is running directly towards him at 5.0 m/s. If the two players cling together after the tackle, what will be their common velocity?
you can use the formula: (m1 + m2)vf = m1vi m1 = mass of first rugby player (75 kg) m2 = mass of second rugby player (90) vf = their final velocity vi = the initial velocity
