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A man standing 400 away from a wall bangs two pieces of wood together and hears an echo 2.5 seconds later. Determine the speed of sound in air at that place.
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asked
Jul 29, 2021
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Physics Form 1
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anonymous
A man standing 400 away from a wall bangs two pieces of wood together and hears an echo 2.5 seconds later. Determine the speed of sound in air at that place.
sound
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Jul 29, 2021
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anonymous
Speed = 2d/t
=
2 x 400
2.5
= 320m/s.
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