Question: 2) A human cannonball uses a spring-loaded cannon to launch himself. He has a mass of 70 kg, and the spring compresses a total

2) A human cannonball uses a spring-loaded cannon to launch himself. He

2) A human cannonball uses a spring-loaded cannon to launch himself. He has a mass of 70 kg, and the spring compresses a total distance of 1.40 m. If he needs a launch velocity of 18.0 m/s, what should be the value of the spring's spring constant?

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