(25%) Problem 1: Two billiard balls with the same mass m move towards one another. Ball one moves in the positive x-direction with a speed of Vlia and ball two moves in the negative xdirection y with a speed of v2i. The two balls collide elastically, and both balls change direction after the collision. x Uthccxporttamnn l> & If the initial speeds of the balls were Vli = 2.0 mls and v2i = 1.0 m/s, what would be the nal speed and direction of ball two, V2f, in meters per second? Grade Summary Deductions 0% O V2f = 2.0 mls, in the negative x-direction. Potential 100% O V2f = 2.0 mls, in the positive xdirection. O V2f = 1.0 mls, in the negative x-direction. Submissions 0 V2f = 1.0 mls, in the positive xdirection. Attempts remaining: 5 _ ( per attempt) O v2f _ 0 III/S. detailed View 25%) Problem 2: Suppose a 2150 kg elephant is charging a hunter at a speed of 3.5 m/s. El & 33% Part (a) Calculate the momentum of the elephant, in kilogram meters per second. i] 33% Part (b) How many times larger is the elephant's momentum than the momentum of a 0.0375 -kg tranquilizer dart red at a speed of 355 m/s? > a 33% Part (c) What is the momentum, in kilogram meters per second, of the 97 .5-kg hunter running at 4.05 m/s after missing the elephant