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3 years ago

How much kinetic energy does an 80 kg man have while running at 3 m/s?

Physics

1 answer:

Soloha48 [4]3 years ago

7 0

Hello!

$\large\boxed{KE = 360 J}$

Use the equation KE = 1/2mv² to solve for the kinetic energy of the man.

We are given the mass and velocity, so plug these values into the equation:

KE = 1/2(80)(3²)

KE = 1/2(720)

KE = 360 J

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Correct answer choice is:

C. Medium range

Explanation:

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Answer

given,

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speed of the wave , v = 50 m/s

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$\lambda = \dfrac{2L}{n}$

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the frequency expression is given by

$f = n\dfrac{v}{2L}$

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n = 1

$\lambda_1 = \dfrac{2\times 2}{1}$

λ₁ = 4 m

n = 2

$\lambda_2 = \dfrac{2\times 2}{2}$

λ₂ = 2 m

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$\lambda_3 = \dfrac{2\times 2}{3}$

λ₃ = 1.333 m

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f₂= 25 Hz

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Answer:

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4 years ago

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