A bullet of mass 10.1 g is fired into an initially stationary block and comes to rest in the block. The block, of mass 1.25 kg, is subject to no horizontal external forces during the collision with the bullet. After the collision, the block is observed to move at a speed of 4.70 m/s. (a) Find the initial speed of the bullet. (b) How much kinetic energy is lost?

          A bullet of mass 10.1 g is fired into an initially stationary block and comes to rest in the block. The block, of mass 1.25 kg, is subject to no horizontal external forces during the collision with the bullet.
After the collision, the block is observed to move at a speed of 4.70 m/s.
(a) Find the initial speed of the bullet.
(b) How much kinetic energy is lost?

A bullet of mass 10.1 g is fired into an initially stationary block and comes to rest in the block. The block, of mass 1.25 kg, is subject to no horizontal external forces during the collision with the bullet.
After the collision, the block is observed to move at a speed of 4.70 m/s.
(a) Find the initial speed of the bullet.
(b) How much kinetic energy is lost?

Added by Robert C.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Adi S

06/20/2022

Step 1

Given: Mass of bullet (m1) = 10.1 g = 0.0101 kg Mass of block (m2) = 1.25 g = 0.00125 kg Show more…

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Texts: A bullet of mass 10.1 g is fired into an initially stationary block and comes to rest in the block. The block, with a mass of 1.25 g, is subject to horizontal external forces during the collision with the bullet. After the collision, the block is observed to move at a speed of 4.70 m/s. a) Find the initial speed of the bullet. b) How much energy is lost?