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An astronaut standing on the surface of the moon throws a rock up into the air...

An astronaut standing on the surface of the moon throws a rock up into the air with an initial velocity of 8.617 m/s. When the rock is released, the astronaut’s hand is 1.16 m above the surface of the moon. (Acceleration due to gravity on the moon = 1.63 m/s2)
i) How long does it take for the rock to reach its maximum height?
ii) What is the rock’s maximum height?
iii) What is the time taken by the rock to move from astronaut’s hand to the surface of the
moon?
iv) Find the velocity of the rock when it touches the surface of the moon.

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