On the moon, the acceleration due to gravity is $1\mathrm{.}63$ meters per second $.$ Suppose you are standing on the moon and see a rock falling. At the instant you see it$,$ the rock is $30$ meters above the moon$$s surface. The rock hits the surface $2\mathrm{.}3$ seconds later. How fast was the rock moving when it hit the surface?

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To solve this problem we can use the kinematic equation for motion under const... View the full answer