One student bangs two bricks together
the sound wave produced is reflected from the wall and travels back to the students.
describe how they can determine speed of sound

The students can use a time watch to calculate the time taken in by the sound wave to reach them after brick collide to the wall.

Sound Wave:

These are the longitudinal waves in which particles of the medium oscillates parallel to the direction of wave propagation,

Therefore, The students can use a time watch to calculate the time taken in by the sound wave to reach them after brick collide to the wall.

To know more about Sound wave,

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This could be done if a stop watch is used to calculate the time taken to hear the echo and a rule should be used to calculate the distance between the bricks and the wall. Then divide distance by time

Explanation:

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trig 15.3 cos

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