Homework Help: Physics

Posted by Angel on Wednesday, February 1, 2012 at 7:54pm.

A worker drives a 0.509 kg spike into a rail tie
with a 2.08 kg sledgehammer. The hammer
hits the spike with a speed of 63.3 m/s.
If one ﬁfth of the hammer’s kinetic energy
is converted to the internal energy of the hammer and spike, how much does the total internal energy increase?
Answer in units of J

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