A halfback with a mass m$1=98$ kg is running up field with a speed of v$1=7\mathrm{.}6$ m$/$s$.$ His

angle of attack is $=37($relative to y axis$).$ He is tackled by an opponent with a mass

m$2=112$ kg$,$ who approaches the halfback at an angle $=32$ with a velocity v$2=4\mathrm{.}1$

m$/$s$.$ Assume the collision is perfectly inelastic.

a$)$ Calculate the magnitude and direction of the resultant velocity of the two players just

after the tackle. $(3$ pts$.)$

b$)$ Calculate the change in kinetic energy for the system of the two players.