Astronauts on our moon must function with an acceleration due to gravity of 0.170g .

Question

A. If an astronaut can throw a certain wrench 14.0 { m} vertically upward on earth, how high could he throw it on our moon if he gives it the same starting speed in both places?

B. How much longer would it be in motion (going up and coming down) on the moon than on earth?

***For part A I got 82.4 m which is correct but I just can't figure out how to do part B.

Answer 1

The time of flight is 2 Vo/g.

So, the same factor 1/0.17 = 5.9 increase would be applied to the time of flight.