Author Question: The mass of 1 m3 of fresh water is 1,000 kg. At the top of a hydroelectric dam the potential energy ... (Read 59 times)

V@ndy87 · **on:** Jul 29, 2018

The mass of 1 m3 of fresh water is 1,000 kg. At the top of a hydroelectric dam the potential energy of the water is
a. 1,000 N. b. 9,800 N.
c. 500 N. d. There is not enough information to calculate the potential energy.

Question 2

A kid slides down an icy (frictionless) hill starting from rest. At the top his gravitational potential energy is 500 J.Suppose after reaching the bottom he then continues sliding up another icy slope on the other side of the valley. When he finally comes to a stop he will have reached a height
a. equal to the height he started from on the other hill.
b. less than the height he started from on the other hill.
c. more than the height he started from on the other hill.
d. none of the above