Answer Happy

Problem2: A rocket is initially at rest on the surface of an unknown planetary body. The rocket engine is then ignited and it provides an upward thrust force that grows steadily as time goes on. The mass of the rocket be treated as being constant over the period of time being considered. A graph of acceleration vs thrust force is shown here for the liftoff of the rocket.
Problem 2-A rocket in thelly at real in the face of engine is the ignital and it prides an syre and trust fem that grows headly time gen The me of the hat may be treated an being ma the peal of some big etderel. A graph of accdeathm to three is shen bere he the line of the rohet What is the mass of the rocket? acceleratiem (EN) Problem 4-Aprile fired at an angle 05 04 0.3 0.1 10 20 30 40 Thrust Force (N) Problem 3 An airplane engine starts from rest; and 2 seconds later, it is rotating with an angular speed of 420 resmin. If the angular acceleration is stant, he many revolutions does the propeller underge during this time? with an initial