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OpenStudy (anonymous):
A 1-kg model airplane has 12.5 joules of kinetic energy and 98 joules of gravitational potential energy. What is its speed? What is its height?
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OpenStudy (isaidavila):
Ke=1/2(mv^2) 12.5=1/2(mv^2) 25=1*v^2 v=5
OpenStudy (isaidavila):
U=mgh 98=1*10*h 9.8=h
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