1. Before working this problem, review Conceptual Example 14. Apellet gun is fired straight downward from the edge of a cliff thatis 12 m above the ground. The pellet strikes the ground with aspeed of 28 m/s. How far above the cliff edge would the pellet havegone had the gun been fired straight upward?
_______________________ m
2.  An astronaut on a distant planet wants todetermine its acceleration due to gravity. The astronaut throws arock straight up with a velocity of +10 m/s and measures a time of24.1 s before the rock returns to his hand. What is theacceleration (magnitude and direction) due to gravity on thisplanet? (Indicate direction by the sign of the acceleration.)
_________________ m/s2
