A Runner Runs Around a Track Consisting of Two Parallel

question 49

Multiple Choice

A runner runs around a track consisting of two parallel lines 96 m long connected at the ends by two semicircles with a radius of 49 m. He completes one lap in 2.0 minutes. What is his average speed?

• A) 1.6 m/s
• B) 4.2 m/s
• C) 2.9 m/s
• D) 0 m/s
• E) 2.1 m/s

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Definitions:

Striated Involuntary

Relating to muscle tissue that is marked by a pattern of stripes or striations and is not under conscious control, such as the heart muscle.

Axons

Long, slender projections of nerve cells (neurons) that transmit electrical impulses away from the neuron's cell body.

Action Potentials

Rapid changes in the electrical charge of a neuron's membrane, facilitating the transmission of nerve impulses.

Neurons

Specialized cells within the nervous system that transmit information to other neurons, muscles, or gland cells.