Pair each linear idea with its twin

Exercise and reference answers

Matching pairs

1. Left

   Force

   Right

   Torque, written tau

2. Left

   Mass

   Right

   Moment of inertia, written I

3. Left

   Velocity

   Right

   Angular velocity, written omega

4. Left

   Acceleration

   Right

   Angular acceleration, written alpha

5. Left

   Momentum p = m v

   Right

   Angular momentum, written L = I omega

6. Left

   Distance x

   Right

   Rotation angle, written theta

7. Left

   Kinetic energy

   Right

   Rotational KE, half I omega squared

8. Left

   F = m a

   Right

   Newton's second law for spin, tau = I alpha

Instructions

Tap a straight-line quantity, then tap its rotational partner.

Explanation