Momentum of exhaust gases and thrust from a 20,000kg rocket

[Spakfilla]

A 20 000kg rocket exhausts gases at a constant 600kg per second at 300ms^-1

a) Calculate the momentum of the exhaust gases

b) Deduce the thrust applied to the rocket engines


Any help would be much appreciated

 

[Rick88]

Just use:

p=mv

and a=dv/dt

(and F=ma, of course).