Write a letter to your local newspaper. be sure to include the following information in your letter •address the letter to the editor of a local newspaper •identify the three energy sources most used in your state •discuss the influence of cost and availability on your states statistics •describe how each energy source impacts the local environment •explain your opinion with at least five facts from your researce •end the letter with a closing and your signature

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

What is the mass of the same rock on the earth

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.