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weqwewe [10]
3 years ago
9

What is the kinetic energy of a 1.0-kg billard ball that moves at 5.0 m/s?

Physics
1 answer:
tankabanditka [31]3 years ago
5 0

Given:\\m=1kg\\v=5\frac{m}{s} \\\\Find:\\E_k=?\\\\Solution:\\\\E_k=\frac{mv^2}{2} \\\\E_k=\frac{1kg\cdot(5\frac{m}{s})^2 }{2} =12.5J\\\\\\Correct\;is\;answer\; D

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Two runners ran side by side, each holding one end of a horizontal pole. How would this affect the direction of the runners? Exp
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6 0
2 years ago
A group of hikers hear an echo 3.3 s after they shout. The temperature is 20◦C.
romanna [79]

Answer:

560 m

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The speed of sound in air is approximately:

v ≈ v₀ + 0.6T

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