PLEASE HELP! 15 points! 7. Jake is bowling with a 8 kg bowling ball. He rolls the ball at 7 m/s, and it hits one stationary pin
with a mass of 2 kg. The pin goes flying forward at 12 m/s. How fast is the bowling ball now
traveling?

please show steps how you got the answer, I will report answers if you just put something for points

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.