Posted by **Lina** on Monday, November 5, 2012 at 11:52pm.

Kinetic energy = 1/2 mv^2 where m is the mass of the particle and v is the velocity of the particle. A joule is the SI unit for energy and is kg.m^2/s^2.

Find the energy in joules of a 56.7 g mass moving at the speed of 70. km. hr.

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