Two Identical Freight Cars Roll Without Friction Towards Each Other

question 38

Multiple Choice

Two identical freight cars roll without friction towards each other on a level track.One car rolls at 2 m/s and the other car rolls at 1 m/s.After the cars collide,they couple and roll together with a speed of

• A)0.5 m/s.
• B)0.33 m/s.
• C)0.67 m/s.
• D)1.0 m/s.
• E)none of the above

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Definitions:

DNA Degradation

The breakdown or decomposition of DNA molecules, which can occur due to environmental factors, chemical reactions, or enzymatic processes.

Bottleneck Effects

A phenomenon where a population's size is significantly reduced for at least one generation, leading to a loss of genetic diversity.

Founder Effects

A genetic phenomenon that occurs when a new population is established by a very small number of individuals from a larger population, leading to a reduction in genetic variation and a potentially different genetic structure compared to the original population.

Allele Frequencies

The proportion or prevalence of different alleles (versions of a gene) in a particular population, which can change over time due to evolutionary pressures.