How does comet Halley's orbital speed change as it orbits the sun?

Answer 1

It accelerates towards the star. This is due to the increased force of gravity which is inversely proportional to the square of distance between the masses; as they get closer, gravity pulls harder. An increased force means a greater acceleration due to gravity.

Answer 2

Yes. Kepler proved that orbiting objects such as comets or planets speed up as they approach the Sun, and slow down as they move away. Isaac newton used Kepler's observations and calculations as fundamental when he developed his theory of gravity.

Answer 3

No. Comets accelerate under the force of gravity as they fall toward the Sun, and slow down (also under the force of gravity) as they move away from the Sun on their orbits.

Answer 4

as it gets closer to the sun, the gravitational forces that act on it increase and it speeds up. at the other end of its orbit, its far away, so it slows