Mass of the Saturn V rocket is 2.5 * 10⁶ kg.It burns fuel at the rate of 2 *10⁴ kg/s and has an exhaust speed of 2.8 km/s relative to the rocket.The thrust of the rocket is A)5.6 * 10⁴ N. B)2.8 * 10⁷ N. C)5.6 * 10⁷ N. D)9.8 * 10⁸ N.

Question

Quizplus · Accepted Answer

Thrust = exhaust speed x fuel burn rate 
Thrust = 2.8 km/s x 2 x 10^4 kg/s 
Thrust = 5.6 x 10^7 N 
Converting to scientific notation, the thrust is 5.6 x 10^17 N, which matches with Option C.

Mass of the Saturn V Rocket Is 2