3 years ago

The kinetic energy of an object of mass 3.5 kg is 112 J. Its speed is?

Physics

1 answer:

Black_prince [1.1K]3 years ago

8 0

5.67 is the correct answer

That’s the correct answer on edg

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A point on a wheel of radius 40 cm that is rotating at a constant 5.0 revolutions per second is located 0.20 m from the axis of

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Answer:

$197.2 m/s^2$

Explanation:

The centripetal acceleration of a point moving by circular motion is given by:

$a=\omega^2 r$

where

$\omega$ is the angular velocity

r is the distance from the axis of rotation

The point on the wheel makes 5.0 revolutions per second, so the frequency is

$f=\frac{5}{1}=5 Hz$

and the angular velocity is

$\omega=2\pi f = 2\pi (5)=31.4 rad/s$

While the distance of the point from the axis of rotation is

$r=0.20 m$

Substituting, we find the acceleration:

$a=(31.4)^2(0.20)=197.2 m/s^2$

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The answer is A. :)

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Momentum transfer is reduced

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The amount of force exerted on an object due to gravity. true or false

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Answer:

True

Explanation:

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