Energy Calculations and Recap

Question

A rocket is traveling at 130 m/s at 24,000 meters above the apacific Ocean. Assuming the rocket has a mass of 30,000 kg, what is the kinetic energy of the rocket

Answer 1

By definition.

Kinetic energy (KE) = (1/2)*mv²

where

m = mass

v = velocity.

For the given problem,

m = 30,000 kg

v = 130 m/s

In SI units,

KE = (1/2)*(30000 kg*(130 m/s)²

= 2.535 x 10⁸ J

= 253.5 x 10⁶ J

= 253.5 MJ

Answer: 253.5 MJ

Note:

MJ = mega joules