The image below shows four points on the orbit of a comet around the sun. At which point does the comet have the most kinetic energy?

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?

The amount of potential energy possessed by an elevated object is equal to what?

Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s