nathan711 nathan711
  • 23-04-2014
  • Chemistry
contestada

a 4 kg rock is rolling 10 m/s find its kinetic energy

Respuesta :

JcAlmighty
JcAlmighty JcAlmighty
  • 20-02-2017
The answer is 200 J

The kinetic energy (KE) is:
KE = 1/2 m * v²
m - mass of the object
v - velocity of the object

We have:
m = 4 kg
v = 10 m/s

KE = 1/2 * 4 kg * 10² m/s
KE = 200 J
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