Circles and orbits bingo

Exercise and reference answers

Clues and terms

1. Clue

   Arc length divided by the radius of the curved path

   Item

   Rotation angle

2. Clue

   Distance actually travelled along a circular path

   Item

   Arc length

3. Clue

   Rotation angle turned per second, in radians

   Item

   Angular vel

4. Clue

   Change in velocity in size or direction, or in both at once

   Item

   Acceleration

5. Clue

   Name for whatever net force holds a body on its circular path

   Item

   Centripetal

6. Clue

   Apparent push felt only because the frame is turning

   Item

   Fictitious

7. Clue

   Each planet moves on an ellipse with the Sun at one focus

   Item

   Kepler first

8. Clue

   The Sun to planet line sweeps equal areas in equal times

   Item

   Kepler second

9. Clue

   Period squared compares as the average distance cubed

   Item

   Kepler third

Instructions

Read each call, tap its term on the board. Three in a line is bingo.

Explanation