A Train Starts from Rest and Accelerates Uniformly Until It

question 488

Multiple Choice

A train starts from rest and accelerates uniformly until it has traveled 5.6 km and acquired a forward velocity of 42 m/s. The train then moves at a constant velocity of 42 m/s for 420 s. The train then slows down uniformly at until it is brought to a halt. The acceleration during the first 5.6 km of travel is closest to which of the following?

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Definitions:

Language Disorder

A type of communication disorder characterized by difficulties in acquiring and using language due to problems with comprehension or production.

Perceptual Deficit

A limitation or impairment in the ability to perceive or interpret sensory information correctly.

Attention-Deficit/Hyperactivity Disorder

A condition related to brain development that is marked by a combination of distractibility and/or excessive activity and impulsiveness, which disrupts normal functioning or growth.

Fragile X Syndrome

A genetic condition causing intellectual disability, behavioral and learning challenges, and various physical characteristics.