A 10-Kg Object Moving in a Certain Direction Has a Kinetic

question 50

Multiple Choice

A 1.0-kg object moving in a certain direction has a kinetic energy of 2.0 J.It hits a wall and comes back with half its original speed.What is the kinetic energy of this object at this point?

• A)2.0 J
• B)1.0 J
• C)0.50 J
• D)0.25 J
• E)4.0 J

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Definitions:

X-ray Diffraction

A technique used to determine the atomic and molecular structure of a crystal, by measuring the angles and intensities of X-rays that are scattered by the crystal.

Watson

Refers to James Watson, who, along with Francis Crick, Maurice Wilkins, and Rosalind Franklin, is credited with discovering the double helix structure of DNA.

Crick

Francis Crick, a British molecular biologist, biophysicist, and neuroscientist, known for co-discovering the structure of DNA along with James D. Watson.

Griffith's Transformation

A process discovered by Frederick Griffith in 1928, demonstrating that a substance from dead bacteria could genetically transform living bacteria.