Action-Reaction

Practice

practice problem 1

Suppose everyone in China was to jump in the air simultaneously. Estimate the following quantities to the nearest order of magnitude …
  1. the acceleration of the earth
  2. the initial velocity of the earth
  3. the maximum displacement of the earth

solution

practice problem 2

The smart-assed horse problem.

solution

practice problem 3

Write something different.

solution

practice problem 4

Write something completely different.

solution

 

The Physics Hypertextbook