Mechanical 83220

An airplane weighing 100 tons flies at an altitude of 11 km at a speed of 850 km/h. What is its kinetic, potential, and total mechanical energy?

Correct answer:

E1 =  2787.4228 MJ
E2 =  10791 MJ
E3 =  13578.4228 MJ

Step-by-step explanation:

m=100 t kg=100 1000  kg=100000 kg h=11 km m=11 1000  m=11000 m v=850 km/h m/s=850:3.6  m/s=236.11111 m/s g=9.81 m/s2  kinetic energy e1=21 m v2=21 100000 236.111122787422839.5062 J E1=e1/106=2787422839.5062/106=2787.4228 MJ
potencial energy e2=m g h=100000 9.81 11000=10791000000 J E2=e2/106=10791000000/106=10791 MJ
E3=E1+E2=2787.4228+10791=13578.4228 MJ



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