document.write( "Question 1205987: A 52 kg student traveling in a car with a constant velocity has a kinetic energy of 1.6* 10^4 J. What is the speedometer reading of the car in km/h?
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Algebra.Com's Answer #843130 by MathLover1(20849) $\"\"$ $\"About$

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\n" ); document.write( "given:\r
\n" ); document.write( "\n" ); document.write( " $\"m=52kg\"$
\n" ); document.write( " $\"K=1.6%2A10%5E4%2AJ\"$
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\n" ); document.write( "\n" ); document.write( "the kinetic energy is\r
\n" ); document.write( "\n" ); document.write( " $\"K=%281%2F2%29mv%5E2\"$ where $\"m\"$ is the mass and $\"v\"$ is the velocity\r
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\n" ); document.write( "\n" ); document.write( " $\"1.6%2A10%5E4%2AJ=%281%2F2%29%2A52%2Av%5E2\"$ \r
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\n" ); document.write( "\n" ); document.write( "since $\"1J=1km%5E2%2Fs%5E2\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"%281.6%2A10%5E4%2A%28km%5E2%2Fs%5E2%29%29%2F%2852%2F2%29=v%5E2\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"v%5E2=615.3846153846155%28km%5E2%2Fs%5E2%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"v=sqrt%28615.3846153846155%28km%5E2%2Fs%5E2%29%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"v=24.81%28km%2Fs%29\"$ \r
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