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A halfback with a mass m1 = 95 kg is running up field with a speed...

A halfback with a mass m1 = 95 kg is running up field with a speed of v1 = 7.6 m/s. He is tackled by an opponent with a mass m2 = 125 kg, who approaches the halfback at an angle β = 30°with a velocity v2 = 4.2 m/s. Assume the collision is perfectly inelastic.

  1. a) Calculate the magnitude and direction of the resultant velocity of the two players just after the tackle. (3 pts.)

  2. b) Calculate the change in kinetic energy KE for the system of the two players. (3 pts.)

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