Lesson eLearning

A sound source emits sound that travels at 340 m/s in air. If you hear the sound 0.5 seconds after it is produced, how far is the source from you?

hard 3 marks Class 4 · EVS · Ear to Ear
Answer
170 meters

The correct answer is 170 meters — Hence, the sound source is 170 meters away.

Step-by-step solution

  1. Recall the formula: distance = speed × time.
  2. Insert the given values: speed = 340 m/s, time = 0.5 s.
  3. Multiply: 340 × 0.5 = 170.
  4. Hence, the sound source is 170 meters away.
Common mistake: Forgetting to multiply speed by time or miscalculating the product

Concept tested: Speed of sound

Published · How this solution was prepared and checked

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