A 90 kg fullback collies in midair with a 130 kg linebacker at the goal line...
A 90 kg fullback collies in midair with a 130 kg linebacker at the goal line during a goal line stand. Just before the collision, the linebacker had a velocity of 5 m/s heading away from the goal line. How fast must the fullback be travelling towards the goal line to score a touchdown?
a. +7.47 m/s
b. +7.22 m/s
c. +5.00 m/s
d. +10.27 m/s
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