Suppose two billiard balls, A and B, with the same mass, undergo a head-on elastic collision. Ball A was initially stationary. Which of the following outcomes are possible following the collision? Choose all that apply. One ball is moving and one is stationary Both balls are stationary Both balls are moving

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Chapter9: Linear Momentum And Collisions
Section: Chapter Questions
Problem 9.4OQ: A 2-kg object moving to the right with a speed of 4 m/s makes a head-on, elastic collision with a...
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Suppose two billiard balls, A and B, with the same mass, undergo a head-on elastic
collision. Ball A was initially stationary. Which of the following outcomes are possible
following the collision?
Choose all that apply
One ball is moving and one is stationary
Both balls are stationary
Both balls are moving
Transcribed Image Text:Suppose two billiard balls, A and B, with the same mass, undergo a head-on elastic collision. Ball A was initially stationary. Which of the following outcomes are possible following the collision? Choose all that apply One ball is moving and one is stationary Both balls are stationary Both balls are moving
A ballistic pendulum can be used to measure the speed of a bullet from a gun. A
ballistic pendulum consists of a block hanging from a string. You would shoot a bullet
at the block, which would lodge itself inside the block, causing the block to swing
forward. The faster/heavier the bullet, the larger the angle the block will swing.
0
B
0
B
Consider the 2D collision when the bullet (travelling horizontally) hits the block (at
rest). During this brief collision (ignoring the pendulum aspect for now), which of the
following would apply?
Kinetic energy and momentum are both conserved.
O Kinetic energy is conserved but momentum is not.
Kinetic energy is not conserved but momentum is.
ONeither kinetic energy, nor momentum are conserved.
Transcribed Image Text:A ballistic pendulum can be used to measure the speed of a bullet from a gun. A ballistic pendulum consists of a block hanging from a string. You would shoot a bullet at the block, which would lodge itself inside the block, causing the block to swing forward. The faster/heavier the bullet, the larger the angle the block will swing. 0 B 0 B Consider the 2D collision when the bullet (travelling horizontally) hits the block (at rest). During this brief collision (ignoring the pendulum aspect for now), which of the following would apply? Kinetic energy and momentum are both conserved. O Kinetic energy is conserved but momentum is not. Kinetic energy is not conserved but momentum is. ONeither kinetic energy, nor momentum are conserved.
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