A 90-Kg Halfback Running North with a Speed of 11

Multiple Choice

A 90-kg halfback running north with a speed of 11 m/s is tackled by a 125-kg opponent running south at 5 m/s.The collision is perfectly inelastic.Compute the velocity of the two players just after the tackle.

A) 7.5 m/s south
B) 1.7 m/s south
C) 1.7 m/s north
D) 10.4 m/s north
E) ​7.5 m/s north