How Fast Would a Car Be Moving with the Same Energy as a Pound of Body Fat?

[physics...]

a pound of body fat has an energy content of about 4100 kcal. if a 1400kg automobile had an equivalent amount of translational kinetic energy, how fast would is be moving?
<.447 m/s = 1mph, 1kcal= 4186j>

I really don't know how to approach this question if someone could show me step by step how to do it I would appreciate it, so I can learn how to do it.

thanks

 

[Zula110100100]

If 1Kcal = 4186J then 4100 Kcal = 1.72e7 J
KE = .5mv²
1.72e7 = .5(1400)v²
v = 156.58m/s = 350mph

 

[physics...]

Thanks for the reply could you provide the basic formulas for me you used to solve this?

thanks

 

[Zula110100100]

The only one I really used was the Ke = .5mv^2 that I listed above. I just converted the Kcal to Joules, That is the KE, the rest is solving for v

 

[physics...]

ok thanks