Velocity 3 ms. Note that by doubling the speed you quadruple the kinetic energy. The formula for calculating kinetic energy KE is KE 05 x mv2.
Again KE is energy so must be in joules J.
Kineticenergy frac12times mass times speed2. How to Calculate Kinetic Energy - YouTube In this video we will learn how to calculate the kinetic energy of a object using the formula KE 12 mv2. Step 4 Put these into the equation. Kineticenergy frac12times mass times speed2.