A 2.5 x 10^3 kilogram truck with rubber tires moves through a 120 meter radius turn on dry asphalt surface. A. Determine the force of friction acting on the trucks tires during the turn. B. Calculate the maximum speed with which the truck could have made this turn. C. Explain how driving across a patch of ice during the turn would reduce the trucks ability to safely complete the turn.

In a game of pool, ball a is moving with a velocity v0 of magnitude v0 = 15 ft/s when it strikes balls b and c, which are at rest and aligned as shown. knowing that after the collision the three balls move in the directions indicated and assuming frictionless surfaces and perfectly elastic impact (that is, conservation of energy), determine the magnitudes of the velocities va, vb, and vc.