A spaceship with a mass of $20,000 \mathrm{~kg}$ is traveling in a straight line at a constant speed of $300 \mathrm{~km} / \mathrm{s}$ in deep space. Its rockets engines must be:
A) off
B) firing

Question

Quizplus · Accepted Answer

In deep space, far from significant gravitational fields and without atmospheric drag, a spaceship will continue moving at a constant speed in a straight line if no forces are acting on it, according to Newton's first law of motion. Therefore, the rocket engines must be off to maintain a constant speed without acceleration.

A Spaceship with a Mass Of 20,000 kg20,000 \mathrm{~kg}20,000 kg Is Traveling in a Straight Line at a Constant Speed

A Spaceship with a Mass Of $20,000 \mathrm{~kg}$ Is Traveling in a Straight Line at a Constant Speed