Question

1.)

a.) The velocity of a diver just before hitting the water is -7 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 1.03 s of the dive?
______m

b.) An astronaut on a distant planet wants to determine its acceleration due to gravity. The astronaut throws a rock straight up with a velocity of +12 m/s and measures a time of 18.0 s before the rock returns to his hand. What is the acceleration (magnitude and direction) due to gravity on this planet? (Indicate direction by the sign of the acceleration.)

______m/s^2

Answer 1