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Maru [420]
3 years ago
10

A kicked ball rolls across the grass and eventually comes to a stop in 4.0 sec. When the ball was kicked, its initial velocity w

as 20 mi/ hr. What is the acceleration of the ball as it rolls across the grass?
Physics
1 answer:
kotegsom [21]3 years ago
6 0

Answer:

-2.24 m/s²

Explanation:

Given:

v₀ = 20 mi/hr = 8.94 m/s

v = 0 m/s

t = 4.0 s

Find: a

v = v₀ + at

0 m/s = 8.94 m/s + a (4.0 s)

a = -2.24 m/s²

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Explanation:

Given:

dimension of uniform plate, (0.673\times 0.535)\ m^2

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Now we find the moment of inertia about the center of mass of the rectangular plate is given as:

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I_{cm}=\frac{1}{12} \times 10.7\times(0.673^2+0.535^2)

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We know that the center of mass of the rectangular plane is at its geometric center which is parallel to the desired axis XX' .

Now we find the distance between the center of mass and the corner:

s=\frac{\sqrt{ (0.673^2+0.535^2)}}{2}

s=0.4299\ m

Now using parallel axis theorem:

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I=0.6591+10.7\times 0.4299^2

I=2.6363\ kg.m^2

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The best symbolizes the hydrogen bonding between two water molecules is given in the diagram.

<h3 /><h3>What is hydrogen bonding?</h3>

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One definition of a polar covalent bond is one in which one atom has a stronger alternation for electron negativity difference between two bonds, the more polar the link.

Polar molecules like H2O have a mild partial negative charge in one area and a partial positive charge in another.

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