0.75 kg spike is hammered into a railroad tie. The initial speed of the spike is equal to 3.0 m/s. If the tie and spike together absorb 85 percent of the spike’s initial kinetic energy, calculate the increase in internal energy of the tie and spike.

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First law of Thermodynamics

The word thermodynamics consists of two words: thermo- and dynamics. Dynamics means the study of motion. The field of thermodynamics is all about the study of the movement of heat. In a more meaningful way, it is stated as the study of the transfer of energy. Energy transfer is something that we encounter in day-to-day life. Automobiles, chemical reactions, refrigerators, and power generators work on the basis of thermodynamic principles.