Chemistry
posted by Lina .
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.

Convert 56.7 g t kg = 0.0567 kg.
Convert 70 km/hr to m/s = ?
Ke = 1/2 mv^2