Flip and pair: law with what it says

Exercise and reference answers

Matching pairs

1. A

   Kepler's second law

   B

   follows from angular momentum conservation

2. A

   Kepler's third law

   B

   T² proportional to R³

3. A

   Weightlessness

   B

   shared free fall, not weak gravity

4. A

   Linear momentum

   B

   not conserved under gravity

Explanation