A duck swimming on the surface of a pond has an initial velocity of 0.7m/s at an angle of 25° north of
west. It begins accelerating at a rate of 0.5m/s2
at an angle of 41° south of east.
Ра
W
Ducks speed
offer of seconds)

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.