A basketball player jumps straight upward. After 0,625 s, she is 0.441 m above the ground. What is her initial velocity

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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.

Why is no-till farming more sustainable than many traditional methods of farming