3 years ago

What is the speed of a sound wave that takes 0.5 s to travel 750 m?

Physics

1 answer:

kvasek [131]3 years ago

4 0

Answer:

C. 1500.

Explanation:

750 / .5 = 1500.

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On another planet gravity has a value of 5.5 m/s . If an object is dropped how long will it take to fall 53 m?

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Answer:

4.4 seconds

Explanation:

Given:

a = -5.5 m/s²

v₀ = 0 m/s

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0 = 53 + 0 + ½ (-5.5) t²

0 = 53 − 2.75 t²

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14.8 kg

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We are given that

$m_1=43.7 kg$

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According to question

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Where $\alpha=\frac{a}{r}$

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$-36.26=-\frac{1}{2}(4.9)M$

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Answer:

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