Scientists launch a rocket, and they monitor its acceleration and the force exerted by its engines. as the rocket gets higher, the monitors show that the acceleration of the rocket is increasing but the force exerted stays the same. how do newton’s laws explain why the scientists could expect this to happen

a) the total force stays the same, but the action force is increasing as the reaction decreases.
b) the mass of the rocket decreases as fuel is burned, so the acceleration increases.
c) the inertia of the rocket increases, which reduces the force needed to change its speed.
d) the reaction force is increasing as fuel is burned, which causes a greater acceleration.

Your starship, the aimless wanderer, lands on the mysterious planet mongo. as chief scientist-engineer, you make the following measurements: a 2.50-kg stone thrown upward from the ground at 14.0 m/s returns to the ground in 5.70 s ; the circumference of mongo at the equator is 2.20×10^5 km ; and there is no appreciable atmosphere on mongo. (a) the starship commander, captain confusion, asks for the following information: what is the mass of mongo? (b) if the aimless wanderer goes into a circular orbit 2.20×10^4 km above the surface of mongo, how many hours will it take the ship to complete one orbit? (c) an unmanned spacecraft is in a circular orbit around the moon, observing the lunar surface from an altitude of 44.0 km . to the dismay of scientists on earth, an electrical fault causes an on-board thruster to fire, decreasing the speed of the spacecraft by 23.0 m/s . if nothing is done to correct its orbit, with what speed (in km/h) will the spacecraft crash into the lunar surface?