A 15-G Bullet Is Shot Vertically into an 2-Kg Block

question 36

Multiple Choice

A 15-g bullet is shot vertically into an 2-kg block. The block lifts upward 8.0 mm (see the figure) . The bullet penetrates the block and comes to rest in it in a time interval of 0.0010 s. Assume the force on the bullet is constant during penetration and that air resistance is negligible. The initial kinetic energy of the bullet is closest to

• A) 21 J
• B) 14 J
• C) 10 J
• D) 0.0012 J
• E) 0.16 J

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Definitions:

Sewage Treatment

The process of removing contaminants from wastewater, primarily from household sewage, to produce an environmentally safe fluid waste stream and a solid waste suitable for disposal or reuse.

Photosynthesis

The process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.

Sediment

consists of solid particles, often minerals or organic matter, that settle to the bottom of a liquid, commonly found in bodies of water such as rivers, lakes, and oceans.

Suspended Matter

Particles floating within a liquid or gas that have not settled to the bottom, which can include organic and inorganic materials affecting water quality and clarity.