Two Trains,one Travelling at 20 M/s and the Other at 40

question 2

Multiple Choice

Two trains,one travelling at 20 m/s and the other at 40 m/s,are headed toward one another along a straight level track.When they are 950 m apart,each engineer sees the other's train and applies the brakes.Assuming both trains have equal magnitude accelerations after the brakes are applied,determine the minimum magnitude of this acceleration in order to avoid a collision.

• A)1.62 m/s²
• B)0.87 m/s²
• C)3.45 m/s²
• D)1.05 m/s²
• E)2.15 m/s²

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Definitions:

Temporal Precedence

A condition in causal research where the cause must occur before the effect can be observed.

Covariation

The measure of how changes in one variable are associated with changes in another variable.

Applied Research

Inquiry focused on addressing real-world issues rather than purely gaining understanding for its own merit.

Describing Behavior

The process of observing and detailing actions or responses in a specific and objective manner.