How Do You Calculate Velocity from Kinetic Energy?

AI Thread Summary
To calculate velocity from kinetic energy, the formula KE = mv² / 2 is used. A user initially calculated the velocity as 15.34 m/s but later found the correct answer to be approximately 48.6 m/s. Another participant confirmed that using the equation correctly yields a velocity closer to 486 m/s. It's important to ensure that units are consistent when performing the calculations. The discussion emphasizes the significance of correctly applying the kinetic energy formula.
curiousgeorge99
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Homework Statement


A molecule has mass 5.3 x 10^-26 Kg and KE 6.24 x10^-21. What is the velocity in m/s?

Homework Equations


KE = mv^2 / 2


The Attempt at a Solution


I plug the numbers into the equation and get an answer of 15.34, but the correct answer is 48.6 m/s. Is this the wrong equation?
 
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check ur units. that's the correct equation to use
and I get 485 too
 
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