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Alekssandra [29.7K]
2 years ago
13

Consider a block on frictionless ice. Starting from rest, the block travels a distance din

Physics
1 answer:
sweet [91]2 years ago
3 0

Answer:

<em>The distance is now 4d</em>

Explanation:

<u>Mechanical Force</u>

According to the second Newton's law, the net force exerted by an external agent on an object of mass m is:

F = m.a

Where a is the acceleration of the object.

The acceleration can be calculated by solving for a:

\displaystyle a=\frac{F}{m}

Once we know the acceleration, we can calculate the distance traveled by the block as follows:

\displaystyle d = vo.t+\frac{at^2}{2}

If the block starts from rest, vo=0:

\displaystyle d = \frac{at^2}{2}

Substituting the value of the acceleration:

\displaystyle d = \frac{\frac{F}{m}t^2}{2}

Simplifying:

\displaystyle d = \frac{Ft^2}{2m}

When a force F'=4F is applied and assuming the mass is the same, the new acceleration is:

\displaystyle a'=\frac{4F}{m}

And the distance is now:

\displaystyle d' = \frac{4Ft^2}{2m}

Dividing d'/d:

\displaystyle \frac{d' }{d}=\frac{\frac{4Ft^2}{2m}}{\frac{Ft^2}{2m}}

Simplifying:

\displaystyle \frac{d' }{d}=4

Thus:

d' = 4d

The distance is now 4d

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Answer:

(-6,8)

Explanation:

Since v has direction as u, it must be a multiple n of u.

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therefore v = (3×2, 4×2) = (-6,8)

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Answer:

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Because the force of the wall pushing on her increases.

According to Newton's third law of motion, to every action there is an equal and opposite reaction. When the Kamala pushes the wall, the wall also pushes her. Pushing harder against the wall causes the force of the wall pushing her also increase. Thus, making her roll faster.

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Answer:

speed of sound will be 1256 m/sec

Explanation:

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