The Distance, in Miles, from Me to a Moving Train $D ( t ) = \sqrt { ( 30 t ) ^ { 2 } + ( 5 - 30 t ) ^ { 2 } }$

question 79

Multiple Choice

The distance, in miles, from me to a moving train is given by $D ( t ) = \sqrt { ( 30 t ) ^ { 2 } + ( 5 - 30 t ) ^ { 2 } }$ Here represents hours since I heard the train whistle. Calculate the distance to the train 7 hours after I heard the whistle.

• A) 5 miles
• B) 293.47 miles
• C) 86125 miles
• D) 208.55 miles

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Definitions:

Taste Buds

Specialized sensory receptors for taste that are located on the tongue and in the lining of the mouth.

Slow Pain Pathway

The neural pathway in the body that is responsible for transmitting chronic, dull, aching pain sensations to the brain.

Unmyelinated Neurons

Unmyelinated neurons are nerve cells that lack a myelin sheath around their axon, resulting in slower transmission of nerve impulses compared to myelinated neurons.

A-Delta Fibres

Fast-conducting nerve fibers involved in the transmission of pain and temperature sensations.