A rocket becomes progressively easier to accelerate as it travels upward from the ground mainly because
A) the applied force on the rocket increases as burning of fuel progresses.
B) the mass of the rocket decreases as fuel is burned.
C) gravity becomes weaker with increased distance.

Question

Quizplus · Accepted Answer

The mass of the rocket decreases as fuel is burned, making it easier to accelerate according to Newton's second law of motion, which states that acceleration is inversely proportional to mass when force is constant.

A Rocket Becomes Progressively Easier to Accelerate as It Travels