Physics, 28.03.2020 01:21 HannaTheGurls

Please help! I'm not sure what equation or the process to do this question.

A 120 N/m spring is compressed 0.25m and is used to launch a 0.5kg ball. What is the momentum of the ball immediately after is fired?

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Please help! I'm not sure what equation or the process to do this question.

A 120 N/m sp...