Calculate the total mechanical energy of a 9 gram bullet flying at an altitude of 1.5 km at a speed of 600 km / h.
| December 1, 2020 | education
The total mechanical energy is equal to the sum of the potential and kinetic energies, and is formally equal to E = Ekin + Cart = mv ^ 2/2 + mgh
We translate all the necessary data into SI:
m = 9g = 0.009 kg
h = 1.5 km = 1500 m
V = 600 km / h ≈ 166.67 m / s
And knowing the value of the acceleration due to gravity, he believes that
E = 0.009 * 166.67 ^ 2/2 + 0.009 * 1500 * 10 =
125.005 + 135 = 260.005 J
Answer: 260.005 J
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
