What is the speed with kinetic energy

  • #1

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
 

Answers and Replies

  • #2
mezarashi
Homework Helper
651
0
What seems to be the problem? I would check that arithmetic again, with a calculator if possible.
 
  • #3
28
0
Agreed, check your numbers.
 
  • #4
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?
 
  • #5
28
0
Use your answer, plug it back into the KE equation, and tell us what you get. You might find a 10 percent error.
 

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