EASY 12 POINTS ⚠️⚠️ I. Alternate freezing and thawing
II. Karst topography
III. Plant roots
IV. Exfoliation
V. Abrasion
Weathering can be either a chemical or a physical process. The action of water causes physical weathering of rock. Which examples of weathering are the result of the action of water?
A) I, II, V
B) I. and II.
C) I, II, III.
D) I, II, IV, V

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.