On the surface of the moon, the acceleration due to gravity is -1.60 m/s2. If a ball is thrown upward at +20.0 m/s, how long does it take for the ball to reach a velocity of 0 m/s before falling back to the surface of the moon? Photo by: Neil Armstrong. @ 1969 National Geographic The photograph shows astronaut Buzz Aldrin as he walked on the surface of the moon in 1969. Select one: O a. 0.08 s O b. 32 s O c. 20 s O d. 12.5 s