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Answer to Question #81261 in Physics for Snaya
Question #81261
A pencil falls from a student desk that is 0.92m high. What is the final speed of the pencil?
Expert's answer
We can find the final speed of the pencil from the law of conservation of energy:
KE=PE,
1/2 mv^2=mgh,
v=√2gh=√(2∙9.8 m/s^2 ∙0.92 m)=4.25 m/s.
KE=PE,
1/2 mv^2=mgh,
v=√2gh=√(2∙9.8 m/s^2 ∙0.92 m)=4.25 m/s.
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