Even if we do not send people to far-flung planets, we need to send some information about ourselves and our planet.
describe what you would put in a space capsule to be found by the inhabitants of another planet and explain why you have chosen those items.

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.