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saveliy_v [14]
3 years ago
13

a girl skateboards with a kinetic energy of 2543.2 J. if the girl and the skateboard have a total mass of 110 kg, what is her sp

eed?
Physics
1 answer:
zhuklara [117]3 years ago
6 0
     Using the definition of kinetic energy, we have:

E_{c}= \frac{mv^2}{2}  \\ 2543.2*2=110v^2 \\ \boxed {v=6.8m/s}
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An air-track glider attached to a spring oscillates between the 14.0 cm mark and the 71.0 cm mark on the track. The glider compl
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Answer:

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3 years ago
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2 years ago
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Making mass the subject of formula, we have;

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