1. The problem statement, all variables and given/known data On the surface of the moon, an astronaut jumps with a speed of 1.0 m/s at an angle of 30 degres above the horizon. A max height of .78 m is reached. a- What is the acceleration of gravity on the moon? b- Determine the horizontal range. c- How much time did this displacement take? 2. Relevant equations at/2 = v initial (sin angle) displacement =((v initial) ^2 (sin angle))/a ymax = (v initial)^2 / 2a 3. The attempt at a solution question a- 2a(.78m) = 1)(1/2) acceleration is .064 m/s^2 question b- displacement = (1)(sin 60)/.064 displacement = 13.53 m question c- t = .5 m/s / .032 m/s^2 t = 15.62 s Have I made a mistake? I thought gravity on the moon was 1.6 m/s^2, and my teacher usually uses examples that work out correctly.