A 1.2 kg metal head of a geology hammer strikes a solid rock with a speed of 5.7 m/s. Assuming all the energy is retained by the hammer head, how much will it's temperature increase? C= .11 kcal/kgC

Question

I already set up the problem. But I keep getting the wrong answer.

I have :
Temp change= 1/2 (1.2kg)(5.7m/s)^2 (1.00cal) divided by (1.2 kg)(.11 kcal/kgC) (4.18 J) • 1.00 kcal/1000cal
How do I solve this...
Nothing I come out with makes sense