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Amanda [17]
3 years ago
14

If we know the total energy in a system is 30 J, and we know the PE is 20 J. What is the KE?

Physics
1 answer:
svetoff [14.1K]3 years ago
3 0
Can you give more description ??

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2.11 seconds

Explanation:

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v_f=v_i-g*t\\-5.2 = 15.5 - 9.8\,t\\9.8 \,t= 15.5 + 5.2\\t = 20.7/9.8\\t = 2.11 \,\,sec

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If the total momentum for a system is the same before and after the collision, we say that momentum is conserved. If momentum we
andrew-mc [135]

Answer:

Ratio = 1:1

Explanation:

P_{i} = initial momentum of the system

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Dividing both side by P_{i} , we get

\frac{P_{f}}{P_{i}} = \frac{P_{i}}{P_{i}} \\\frac{P_{f}}{P_{i}} = 1\\

hence

Ratio = 1

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Explanation:

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(01.03 LC) <br><br> What kind of motion will an object have when forces on it are balanced?
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Dont have a question rn
sattari [20]

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