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kupik [55]
4 years ago
9

9. Hikers at the bottom of a canyon are facing towards the canyon wall 280.5 meters away. Given

Physics
1 answer:
MrRa [10]4 years ago
3 0

Answer:

The time it takes for the hikers to hear their echo after they shout is 1.65 seconds

Explanation:

The given parameters are;

The distance from the canyon wall to the hikers = 280.5 meters

The speed of sound in air = 340 m/s

Therefore, we have;

Distance traveled by the sound of shouting = 280.5 meters

Distance traveled by the reflection (echo) of the sound of shouting = 280.5 meters

Total distance traveled by the sound to reach back to the hikers = 280.5 + 280.5 = 561 meters

Time, t, for the sound to reach the hikers = Distance traveled by the sound/(The speed of sound in air)

t = 561 m/(340 m/s) = 1.65 seconds.

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Show your work please ​
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Answer:

V = U + at

Explanation:

<u>Given the following data;</u>

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To show that the speed of the stone when it hits the ground is 32 m/s, we would use the first equation of motion;

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Substituting into the formula, we have;

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