10.A 10 kg rock falls 5 meters and hits the ground. Did the rock have any energy just before it hit the ground? If so, how much? What force did it
require, to get the rock to start moving?

Why are graphs useful when interpreting data

Apersons beliefs and general outlook, which act like filters on the information they receive are called ?

An electric power distributor charges residential customers $0.10 per kilowatt-hour (kwh). the company advertises that "green power" is available in 150 kwh blocks for an additional $4 per month. (green power is generated from solar, wind power, and methane sources.) if a certain customer uses an average of 391 kwh per month and commits to one monthly 150 kwh block of green power, what is her annual power bill