1. On Planet X, an astronaut has maximum walking speed of 1.9 m/s. The astronaut's legs are each 1.3 m long. What is the constant of acceleration due to gravity on Planet X?
2. A merry-go-round of diameter 18m revolves at a rate of 8.3 rev/min. What is the velocity of a child who is seated at the outer edge of the merry-go-round?