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Sedaia [141]
3 years ago
13

Will upvote!!!!

Physics
2 answers:
Aloiza [94]3 years ago
7 0

Potential Energy is correct. I took the test

juin [17]3 years ago
4 0
D. potential energy, because there is a bunch of water pent up, essentially stationary, waiting to roll down the steep mountain from the peak, so to say. if the dam were to be removed it would become kinetic.
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Answer:

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Given data

Space vehicle speed=5425 km/h relative to earth

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From the conservation of momentum as the system isolated

p_{i}=p_{f}\\

Since the motion in on direction we can drop the unit vector direction

MV_{i}=4mV_{mE}+mV_{CE}

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Where Vmc is the velocity of motor relative to command

This yields

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Substitute the given values

V_{cE}=\frac{5V_{i}-4V_{mc}}{5}\\ V_{cE}=5425*\frac{1000}{60*60}(m/s)-\frac{4}{5}*81\frac{1000}{60*60}(m/s)\\  V_{cE}=1489m/s

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