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## Homework Statement

How fast is a baseball with a mass of 145 g travelling if it has 94 J of kinetic energy?

## Homework Equations

m = 145 g or 0.0145 kg

Ek = 94 J

v = ?

v = √2Ek/m

## The Attempt at a Solution

I get...

v = √2(94)/0.0145 kg

v = √12966

v = 114

But my book says it should be 36 m/s. What am I doing wrong?

It also mentions that I need to recall that 1 J = 1 kg . m^2/s^2 but I am unsure how to incorporate this into the equation or if it is even necessary.