Question

12.
A rocket of total mass M is travelling at a speed v. The engine of the rocket is fired and fuel is
used up. The mass of the rocket decreases to M/2 and its speed increases to 2v.
What happens to the kinetic energy of the rocket?
A
it doubles
B
it halves
с
it increases by a factor of four
D
it stays the same

Answer 1

Hi hon mai max is a little bit of a warm place for the kids to cook for a little bit and I have also not done