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Ugo [173]
3 years ago
15

In which is momentum conserved: an elastic collision or an inelastic collision?

Physics
1 answer:
solmaris [256]3 years ago
6 0
Energy and momentum<span> are always </span>conserved<span>. Kinetic energy is not </span>conserved<span> in an inelastic collision, but that is because it is converted to another form of energy (heat, etc.). The sum of all types of energy (including kinetic) is the same before and after the collision.</span>
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A 50.0 kg crate is pulled 375 N of force applied to a rope. The crate slides without friction.
LUCKY_DIMON [66]

Hi there!

We can use the work-energy theorem to solve.

Recall that:

\large\boxed{W = \Delta KE = \frac{1}{2}mv_f^2 - \frac{1}{2}mv_i^2}

The initial kinetic energy is 0 J because the crate begins from rest, so we can plug in the given values for mass and final velocity:

W = \frac{1}{2}(50)(5.61^2) = 786.8025 J

Now, we can define work:

\large\boxed{W = Fdcos\theta}}

Now, plug in the values:

786.8025 = Fdcos\theta\\\\786.8025 = (375)(3.07)cos\theta

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cos\theta = .6834\\\theta = cos^{-1}(.6834) = \boxed{46.887^o}

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densk [106]
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3 years ago
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A testable question about what would happen if you fell into a black hole
daser333 [38]

Answer:

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3 years ago
A Pitot-static tube is mounted on a 2.5 cm pipe where oil (???? = 860 kg/m3, ???? = 0.0103 kg/m·s) is flowing. The Pitot tube is
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Answer:

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Now we know that volumetric flow rate is given as:

\dot{V}=a.v

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4 0
3 years ago
Could someone help me with this?
masya89 [10]

Answer:

46,502,000 times

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