Question

What is the kinetic energy of the rocket with mass 15,000 kg and speed of 5200 m/s? A. 2.01 x 10^11 J B. 2.02x 10^11 J C. 2.03 x 10^11 J D. 2.04 x 10^11 J

Answer 1

C.
`E_(k)=2.03x10^(11)J`

The kinetic energy of a body is the ability to perform work due to its movement given by the equation
`E_(k)=(1)/(2)mv^(2)`.

To calculate the kinetic energy of a rocket with mass 15000kg and speed of 5200m/s:

`E_(k)=(1)/(2)(15000kg)(5200m/s)^(2)=202800000000J=2.03x10^(11)J`