A Train Starts from Rest and Accelerates Uniformly Until It $24 \mathrm {~m} / \mathrm { s }$

question 135

Multiple Choice

A train starts from rest and accelerates uniformly until it has traveled 2.1 km and acquired a forward velocity of $24 \mathrm {~m} / \mathrm { s }$ The train then moves at a constant velocity of $24 \mathrm {~m} / \mathrm { s }$ for 400 s. The train then slows down uniformly at $0.065 \mathrm {~m} / \mathrm { s } ^ { 2 }$ until it is brought to a halt. The distance traveled by the train while slowing down is closest to

• A)4.4 km.
• B)4.2 km.
• C)4.0 km.
• D)3.8 km.
• E)3.6 km.

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Definitions:

Maintenance Rehearsal

A cognitive process involving the repeated review of information to retain it in short-term memory.

Proactive Interference

The interference by old learning with the ability to retrieve material learned recently.

Permanent

Lasting or intended to last or remain unchanged indefinitely.

Stimuli

External or internal factors that elicit a response from a sensory system or an organism.