Spacecraft Acceleration and Motion Concepts

What makes sending humans to Mars a difficult mission?

• The short distance between Earth and Mars.

• The simple technology needed for space travel.

• The need to consider fuel, oxygen, time, and radiation exposure.

• The lack of interest from scientists.

Why do scientists create different plans and mathematical models for space missions?

• To make the missions more expensive.

• To confuse the astronauts.

• To compare different options and find the best approach.

• To make the journey longer.

If a spacecraft travels the same distance in half the time, how does its average velocity compare to the original average velocity?

• It is the same.

• It is half.

• It is double.

• It is four times.

If a spacecraft travels the same distance in half the time, how does its acceleration compare to the original acceleration, assuming constant acceleration and starting from rest?

• It is the same.

• It is half.

• It is double.

• It is four times.

If a spaceship travels the same distance in half the time, how much greater must its acceleration be compared to the original acceleration?

• Half as much

• Twice as much

• Four times as much

• The same

If the time it takes to travel a certain distance is cut in half, and the distance stays the same, how does the acceleration change?

• It becomes half as much.

• It becomes twice as much.

• It becomes four times as much.

• It stays the same.

When a spaceship starts from rest and moves with a constant acceleration, how does the distance it travels relate to the time it spends traveling?

• Distance is directly proportional to time.

• Distance is directly proportional to the square of time.

• Distance is inversely proportional to time.

• Distance is inversely proportional to the square of time.

A spaceship travels with a constant acceleration. If it travels for 50% more time, how much farther will it go compared to its original distance?

• 1.5 times farther

• 2.0 times farther

• 2.25 times farther

• 2.5 times farther