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After reading the physics question below, choose the correct answer from the following options.
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.
Consider the 2D collision when the bullet (traveling horizontally) hits the block (at rest). During this brief collision (ignoring the pendulum aspect for now), which of the following would apply?
Options:
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A)
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Kinetic energy and momentum are both conserved. |
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B)
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Kinetic energy is conserved but momentum is not. |
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C)
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Kinetic energy is not conserved but momentum is. |
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D)
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Neither kinetic energy, nor momentum are conserved. |
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