Question

can someone please explain internal energy? like what is it made of? i dont understand?

8A parachutist opens his parachute, decreasing his speed from 12 m/s to 6 m/s over a vertical distance 20 m. The man and his parachute have a combined mass 120 kg. Determine the change in internal energy for the system (which is comprised of the man, parachute, and surrounding air) a. 67 kJ APE AKE DE b. 30 kJ AE: maht 12mv112mv C. 120 kJ 343 d. 12 kJ e. 45 kJ 84.

Answer 1

​​​​​​Internal energy is nothing but system's energy it mean sum of energies of all particles of that system. The major energy contributors of internal energy are kinatic and potential energy.

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