A 750-Kg Halfback Running North with a Speed of 11

Multiple Choice

A 75.0-kg halfback running north with a speed of 11.0 m/s is tackled by a 80.5-kg opponent running south at 7.5 m/s.The collision is perfectly inelastic.Compute the velocity of the two players just after the tackle.

A) 9.2 m/s south
B) 1.4 m/s south
C) 1.4 m/s north
D) 40 m/s north
E) 9.2 m/s north