A student fires a cannonball horizontally with a speed of 38.0m/s from the top of a building. The cannonball remains in the air for 2.70s. Neglect drag.
From what height was the cannonball launched?
How far from from the base of the building will the ball land (measured along the
ground)?

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

What you see with your eyes is a form of energy. a. light b. heat c. chemical d. electrical