rombon8aCeCib rombon8aCeCib
  • 04-03-2017
  • Physics
contestada

Calculate the kinetic energy in joules of a 1,500 kg car that is moving at a speed of 42 km/h

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dexteright02
dexteright02 dexteright02
  • 08-03-2017
Data:
KE (Kinetic Energy) = ? (Joule)
m (mass) = 1500 Kg 
v (speed) = 42 Km/h
converting to m/s (42 / 3.6), we have: v (speed) = 11.6 m/s

Formula:
[tex]K_{E} = \frac{1}{2} m*v^2[/tex]

Solving:
[tex]K_{E} = \frac{1}{2} m*v^2[/tex]
[tex]K_{E} = \frac{1}{2} *1500*(11.6)^2[/tex]
[tex]K_{E} = \frac{1}{2} *1500*134.56[/tex]
[tex]K_{E} = \frac{201840}{2} [/tex]
[tex]\boxed{\boxed{K_{E} = 100920\:Joule}}\end{array}}\qquad\quad\checkmark[/tex]





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