9. Work & Energy
Net Work & Work-Energy Theorem
8:49 minutes
Problem 9e
Textbook Question
Textbook QuestionA horizontal spring with spring constant 85 N/m extends outward from a wall just above floor level. A 1.5 kg box sliding across a frictionless floor hits the end of the spring and compresses it 6.5 cm before the spring expands and shoots the box back out. How fast was the box going when it hit the spring?
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