This past Saturday, I watched some football games on TV. This made me think of some sticky collision problems that we did for physics class. The quarterback was scrambling one way and a defensive lineman tackled him from behind in a sticky collision. This meant that the equation m1v1 +m2v2 = (m1 + m2)vf would be very useful to find out an unknown in this problem. For example, if we wanted to find the final velocity if we knew the mass of the quarterback was 100 at a velocity of 4 m/s and the mass of the defensive lineman was 150 at a velocity of 6 m/s, we would just use that equation to solve it.
(100)(4) + (150)(6) = (100 + 150)vf
400 + 900 = 250vf
vf = 5.2 m/s
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