Answer:
a planet moves closer to the sun, its distance from the sun decreases, which causes its speed to increase to maintain the conservation of angular momentum. This is similar to what happens when a figure skater pulls their arms in during a spin - they rotate faster.
Conversely, as a planet moves away from the sun, its distance increases, which causes its speed to decrease to maintain the conservation of angular momentum. This is similar to what happens when a figure skater extends their arms during a spin - they rotate slower.
To illustrate this, let's consider two hypothetical planets in elliptical orbits around the sun. Planet A is closer to the sun, while Planet B is further away. As both planets move in their orbits, Planet A will experience a smaller change in its distance from the sun compared to Planet B. Therefore, to maintain the conservation of angular momentum, Planet A will have a higher speed than Planet B.
In conclusion, the speed of a planet decreases as it moves away from the sun due to the conservation of angular momentum.
Step-by-step explanation: