Question a 10-kg rock and a 20-kg rock are thrown upward, Ask an Expert

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Question: A 10-kg rock and a 20-kg rock are thrown upward with the same initial speed v0 and experience no significant air resistance.

A- If the 10-kg rock reaches a maximum height h, what maximum height will the 20-kg ball reach?

I have been stuck on this question for a long time, please help. Show steps. Thanks!

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