3 years ago

Sound travels on air molecules. True False

Physics

2 answers:

natima [27]3 years ago

7 0

Answer:

I think the answer is true.

Explanation:

Ivanshal [37]3 years ago

6 0

True because sound is a type of energy made by vibrations

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A high-jump athlete leaves the ground, lifting her center of mass 1.8 m and crossing the bar with a horizontal velocity of 1.4 m

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Explanation:

Given that,

Horizontal velocity = 1.4 m/s

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Using conservation of energy

$K.E+P.E=P.E+K.E$

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$v_{1}=\sqrt{2\times18.62}$

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