What is the speed with kinetic energy

[kadavis2010]

Homework Statement

What is the speed of a 0.145 kg baseball if it's kinetic energy is 105 J? Answer units in of m/s

Homework Equations

kinetic energy = 1/2mv^2

The Attempt at a Solution

105= 1/2(0.145)v^2
105= .0725v^2
v= 36.06

 

[mezarashi]

What seems to be the problem? I would check that arithmetic again, with a calculator if possible.

 

[Mr.Amin]

Agreed, check your numbers.

 

[kadavis2010]

Well it's an online assignment so it imediantly tells me if i am right or wrong... I did it with a calculator several times... What am I doing wrong?

 

[Mr.Amin]

Use your answer, plug it back into the KE equation, and tell us what you get. You might find a 10 percent error.