What’s contact force ?
2 answers:
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Answer:
4306.8625 J or 344549/80J (fraction form)
Explanation:
kinetic energy= mv²
= ×72.5×10.9²
= 4306.8625 J or 344549/80 J
At the release point, the ball has kinetic energy,
and at its maximum height it has potential and kinetic energy,
where is the maximum height attained above the release point.
The LoCoE tells us that we should have