An exam paper contains the following equation for rocket propulsion: . The error in the equation is that, instead of (v + v_e), the velocity of the fuel relative to the ground should be A) −v_e. B) +v_e. C) v − v_e. D) v_e − v. E) 2v_e.

Question

Quizplus · Accepted Answer

The correct velocity of the fuel relative to the ground should be subtracted from the velocity of the rocket (v), as both velocities are in opposite directions. Therefore, the correct equation should be v - v_e. This is option C.

An Exam Paper Contains the Following Equation for Rocket Propulsion