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topjm [15]
3 years ago
15

Sound is repeated near hills.​why

Physics
1 answer:
Anon25 [30]3 years ago
5 0

Answer:

Sound waves are reflected back

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A pelican flying along a horizontal path drops
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The initial speed of the pelican is 8.81 m/s.

Explanation:

Given;

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The time of flight is given by;

t = \sqrt{\frac{2h}{g} } \\\\t = \sqrt{\frac{2*5}{9.81} } \\\\t = 1.01 \ s

The initial horizontal speed of the pelican is given by;

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A ball is thrown vertically upward, which is the positive direction. A little later, it returns to its point of release. The bal
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Answer:

The initial velocity of the ball is <u>39.2 m/s in the upward direction.</u>

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Given:

Upward direction is positive. So, downward direction is negative.

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Acceleration of the ball is due to gravity. So, a=g=-9.8\ m/s^2(Acting down)

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They are usually herbivores and primary consumers in the ecosystem.

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