The allowed shapes for orbits under the force of gravity are ...

[jho37]

The allowed shapes for orbits under the force of gravity are
 
  A) ellipses only.
  B) ellipses and spirals.
  C) ellipses, parabolas, and hyperbolas.
  D) ellipses, spirals, and parabolas.
  E) spirals, circles, and squares.

Question 2

If we represent the Milky Way Galaxy as the size of a grapefruit (10-cm diameter), the distance to the Andromeda Galaxy would be about
 
  A) 10 cm.
  B) 3 m.
  C) 30 m.
  D) 1 km.
  E) 100 km.

[kmb352]

Answer to Question 1

C

Answer to Question 2

B