Question

3?Tl.is time, model the efect of air resistance as a downward force of 30N that is present during the rocket's entire motion We want the rocket to have a velocity of 20m/s at the moment it reaches a beight of 15. (And the rocket's mass is still 10kg). This time, the force of the rocket engine is an unknown value that you'll solve for (a) If the rocket needs to have a velocity of 20m/s at the momen it reaches a height of 15m, what's the total energy it needs to have at that moment (b) How mach work will the force of air resistance do on the rocket by the time it reaches 15m? (c) How mach total work does the engine need to provide in order to make all this happen? (d) Finally, solve for the foree that the engine must provide (e) Explain the connection between net work, net force, total energy, and gravitational potential (We'll discuss in class what exactly you should say bere)