2 Answers
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This is kind of a Physics question.
81.9km/hr x (1000m/km) x (hr/60min) x (min/60sec)= 22.75m/s
Kinetic energy=(1/2)mv^2
Kinetic energy=(1/2)(.0232kg)(22.75m/s)^2= 6.004J
6.004J x (cal/4.184J) = 1.435cal or 1.43x10^-3kcal
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6.00 J
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