A Spectator Watches a Rowing Race from the Edge of a River

question 33

Short Answer

A spectator watches a rowing race from the edge of a river bank. The lead boat is moving in a straight line that is 110 ft from the river bank. If the boat is moving at a constant speed of 10 ft/sec, how fast is the boat moving away from the spectator when it is 600 ft past her? Round the answer to the nearest hundredth, if necessary.
__________ ft/sec

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Definitions:

Opponent-process Theory

A theory in psychology that explains emotional reactions to stimuli, positing that emotions are followed by opposite emotional states.

Negative Afterimages

Visual illusions that occur after looking at a brightly colored object for a prolonged period and then looking away, resulting in seeing the complementary color.

Tinted Glasses

Eyewear with lenses that are colored or darkened to reduce brightness and protect the eyes from glare.

Trichromatic Theory

A theory of color vision that states the human eye has three types of receptors with differing sensitivities to light wavelengths, corresponding to red, green, and blue colors.