A rocket burns 50g of fuel per second ejecting it as a gas with a velocity of `5 xx 10 cm s^(-1)`. What force is exerted by the gas on the rocket?

Explanation

We are to calculate the upward thurst on the rocket .
Upward thrust `=v_t (Deltam)/(Delta t) : " Now " , (Delta m)/(Deltat ) = 50 gs^(-1)`
` v_r = 5 xx 10^(5) cms^(-1)`
`:. ` upward thrust `= 5 xx 10^(5) cms^(-1) xx 50 gs^(-1) = 250 xx 10^(5) " dyne " = 250 N`