haleybugg97 haleybugg97

16-12-2014
Physics

Answered

An 18 kg bicycle carrying a 62 kg girl is traveling at a speed of 7 m/s. What is the kinetic energy of the girl and bicycle?

Verified Answer :

macio06 macio06

16-12-2014

To get the answer we have to substitute total mass and velocity to the formula
E=\(\frac{1}{2} mv^2\), so
E=\(\frac{1}{2} (18+62)*7^2= \frac{1}{2}*80*49=40*49= 1960J\) - its the answer

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16-12-2014

ke=1/2 mv^2
(.5)(80)(7^2)=1960 joules

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