Boys Bicycles
A 23 kg bicycle carrying a 60 kg boy is traveling at a speed of 4 m/s. What is the kinetic energy of the?
bicycle (including the boy)? ~joules~
m=83
v=4 m/s
KE = 1/2 MV^2
= .5*(83*16)=664 kg-m/s^2, or 664 Joules
PS: You have to memorize this formula. It is one of the most basic and fundamental formulas in physics. You will always need to know it if you go into the sciences fields. The other one is for Potential energy: mgh (mass * gravitational acceleration, 9.8 m/s^2.*height)
Tree Bicycles - One More Time (Boys Over Flowers OST)
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