A spacecraft descends vertically near the surface of Planet X. An upward thrust of 30.0 kN from its engines slows it down at a rate of 1.20 m/s2, but if an upward thrust of only 12.5 kN is applied, it speeds up at a rate of 0.80 m/s2, (Note: I will compare the relative sizes of your vectors in your free body diagrams) a) What is the direction of the acceleration of the spacecraft in the case of 30.0 kN thrust

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