Which would require the greater change in the Earth's orbital speed (30 km/s); slowing down so the Earth crashes into the sun, or speeding up so the Earth escapes the sun?
A) speeding up
B) same each way
C) slowing down
D) More information about Earth-sun distance is needed.

Question

Quizplus · Accepted Answer

Slowing down would require a greater change in orbital speed because the Earth would have to lose more energy to fall into the Sun than it would gain to escape the Sun.

Which Would Require the Greater Change in the Earth's Orbital