A bullet is shot through two cardboard disks attached a distance D apart to a shaft turning with a rotational period T, as shown.http://session.masteringphysics.com/problemAsset/1011045/30/MRB_rr_8_a.jpg

Derive a formula for the bullet speed in terms of D , T , and a measured angle theta between the position of the hole in the first disk and that of the hole in the second

Question

A bullet is shot through two cardboard disks attached a distance D apart to a shaft turning with a rotational period T, as shown.http://session.masteringphysics.com/problemAsset/1011045/30/MRB_rr_8_a.jpg

Derive a formula for the bullet speed  in terms of D , T , and a measured angle theta between the position of the hole in the first disk and that of the hole in the second

noelgreco · Answer

You have to convert rotational velocity to translational velocity.  Do you have any thoughts?

noelgreco · Answer

Translational velocity is measured in meters/second
Rotational velocity in radians/second.

What do they have in common, and can you solve each velocity in terms of that variable?