A villain with mass 80.0 kg runs at a velocity of 9.25 m/s into Chuck Norris' fist moving at a speed of 0.150 m/s. The villain is knocked back at a velocity of 8.50 m/s and angle 20.0 from the horizontal, while Chuck Norris' fist moves at a velocity of 0.0745 m/s and 10.0 from the horizontal. a. What is the mass of Chuck Norris' fist in kg? b. How much kinetic energy is lost in the collision? Vi V2i Note: This is a silly problem with silly answers! 20 10