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Santiago Flynn
11/23/2023 · Junior High School

Robots use sensors to navigate. They can use, light, sounds or smells to help them. A robot can send sound signals to bounce off things and "see" their surroundings. Using the equation speed = distance / time a robot can determine the distance of an object by measuring the time taken for an emitted sound to rebound and then be detected by a sensor. The speed of sound is about \( 340 \mathrm{~m} / \mathrm{s} \). If it takes 0.2 s for a signal to leave and return to the robot, how far away is the object? (A) 34 m (B) 3.4 s (C) 3.4 m (D) 68 m

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The distance to the object is 34 m.

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