10. A rifle fires a bullet with speed of 800 m/s into a giant slab of butter weighs 8 kg on a frictionless surface. The bullet weighs 40 grams penetrates the butter, but while passing through it, the bullet pushes the butter to the left, and the butter pushes the bullet just as hard to the right, slowing the bullet down. If the butter skids off at 7 cm/s after the bullet passes through it, what is the final speed of the bullet? (The mass of the rifle matters not.) a.) 780 m/s b.) 782 m/s c.) 784 m/s d.) 786 m/s

10. A rifle fires a bullet with speed of 800 m/s into a giant slab of butter weighs 8 kg on a frictionless surface. The bullet weighs 40 grams penetrates the butter, but while passing through it, the bullet pushes the butter to the left, and the butter pushes the bullet just as hard to the right, slowing the bullet down. If the butter skids off at 7 cm/s after the bullet passes through it, what is the final speed of the bullet? (The mass of the rifle matters not.) a.) 780 m/s b.) 782 m/s c.) 784 m/s d.) 786 m/s

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter11: Collisions

Section: Chapter Questions

Problem 47PQ

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