3. Before: m₁ After: m₂ 1 | Ax co m₁+m₂ a) Measurements on a spring reveal that a force of 0.75 N will compress the spring by 0.25 cm. Find the spring constant of this spring, k. b) This spring is now mounted horizontally with a block of wood attached to one end. A bullet with mass m₁=0.008 kg and velocity v₁ is fired horizontally into the block of wood. The wood block has mass m₂=0.992 kg and is initially at rest. The bullet embeds itself in the wood and the spring is compressed by 2 cm before it comes to rest momentarily. c) Find the velocity of the block/bullet combination directly after the collision needed to compress this spring by Ax=2 cm. d) Find the initial velocity of the bullet before the collision, V₁. Hint: Is the collision elastic or inelastic?

College Physics
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Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
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3.
Before:
mi vi
After:
m2
Ax
(mm)
I coul
m₁+m2
a) Measurements on a spring reveal that a force of 0.75 N will compress the spring by 0.25
cm. Find the spring constant of this spring, k.
b) This spring is now mounted horizontally with a block of wood attached to one end. A
bullet with mass m₁=0.008 kg and velocity v, is fired horizontally into the block of wood.
The wood block has mass m₂=0.992 kg and is initially at rest. The bullet embeds itself in
the wood and the spring is compressed by 2 cm before it comes to rest momentarily.
c) Find the velocity of the block/bullet combination directly after the collision needed to
compress this spring by Ax=2 cm.
d) Find the initial velocity of the bullet before the collision, V₁. Hint: Is the collision elastic or
inelastic?
Transcribed Image Text:3. Before: mi vi After: m2 Ax (mm) I coul m₁+m2 a) Measurements on a spring reveal that a force of 0.75 N will compress the spring by 0.25 cm. Find the spring constant of this spring, k. b) This spring is now mounted horizontally with a block of wood attached to one end. A bullet with mass m₁=0.008 kg and velocity v, is fired horizontally into the block of wood. The wood block has mass m₂=0.992 kg and is initially at rest. The bullet embeds itself in the wood and the spring is compressed by 2 cm before it comes to rest momentarily. c) Find the velocity of the block/bullet combination directly after the collision needed to compress this spring by Ax=2 cm. d) Find the initial velocity of the bullet before the collision, V₁. Hint: Is the collision elastic or inelastic?
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