Kepler's third law

Exercise and reference answers

Questions

1. Question

   Kepler's third law relates the period squared to the radius

   Choices

   1. cubed
   2. squared
   3. unchanged

   Correct choice

   cubed

2. Question

   The constant in that law is

   Choices

   1. different for every planet
   2. the same for all planets in circular orbits
   3. always one

   Correct choice

   the same for all planets in circular orbits

3. Question

   The same law applies to

   Choices

   1. falling apples only
   2. nothing else
   3. satellites orbiting the Earth

   Correct choice

   satellites orbiting the Earth

4. Question

   Kepler's second law follows from conservation of

   Choices

   1. angular momentum
   2. linear momentum
   3. mass

   Correct choice

   angular momentum

Explanation