Question

a rocket is moving up with a velocity v if the velocity of the circuit is suddenly tripled what will be the ratio of two kinetic energies​

Answer 1

let mass be M

original velocity = V  

new velocity = 3V

original KE = 1/2 x M x V^2

New KE = 1/2 x M x(3 V)^2

ratio

= original KE / New KE

= (1/2 x M x V^2)/(1/2 x M x (3V)^2)

= V^2 / 9 V^2

=1/9