Question

A 10 kilogram radio controlled airplane at 1000 meters has 100,000

joules of potential energy, and moving at 10 meters per second it has 500

joules of kinetic energy. How much mechanical energy does the radio

controlled airplane have? Include units in your answer but no decimal

point or digits to the right of the decimal point. *

Answer 1

The mechanical energy of the airplane is 100,500 joules

Step-by-step explanation:

The given parameters are;

The mass of the airplane = 10 kg

The height at which the airplane is located = 1000 meters

The potential energy of the airplane, P.E. = 100,000 joules

The speed of the airplane = 10 m/s

The kinetic energy of the airplane, K.E. = 500 joules

The Mechanical Energy, M.E. = The Potential Energy, P.E. + The Kinetic Energy, K.E.

M.E. = P.E. + K.E.

∴ M.E. = 100,000 joules + 500 joules = 100,500 joules

The mechanical energy of the airplane, M.E. = 100,500 joules.