Question

A volcano launches a lava bomb straight upward with an initial speed of 18 m/s. Taking upward to be the positive direction, find the speed and direction of the lava bomb after the following amounts of time have elapsed

Answer 1

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Answer 2

It seems that your question has a few options. Could you post them too?
We can't help you with questions that provide insufficient information.

Answer 3

wow, what a welcoming! I'm impressed :D

Answer 4

I think from the given information, I can conclude that, the lava bomb will fall back into the mouth of the volcano in about 4 seconds.

Answer 5

yes, thats right, it'll fall back in 3.67 secs