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lyudmila [28]
3 years ago
10

A 4 kg bird has 18 joules of kinetic energy and is rolling 3 m/s. find the mass ?

Physics
1 answer:
vovangra [49]3 years ago
3 0
KE = half of mass times squared speed
18 = 0.5 * mass * (3m/s)^2
18 = 4.5 mass
mass = 18 / 4.5 = 4 kg

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The diagram does not represent a real electric field because the field lines, can someone help explain this for me
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electric field lines are graphical presentation of electric field intensity

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4 0
4 years ago
6. The image to the right shows a moment of inertia
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The weight on each arm that have adjustable positions can be considered as point masses.

The moment of inertia of a point mass is <em>I</em> = m·r²

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Learn more about moment of inertia here:

brainly.com/question/4454769

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