What best describes the advantage of using the model of a food web? a. shows feeding connections b. explains every detail of wildlife c. shows a complex mental model d. represents data collected from space

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost

Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above

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.