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seraphim [82]
3 years ago
12

What is the average acceleration during the time interval 0 seconds to 10 seconds?

Physics
1 answer:
zhuklara [117]3 years ago
3 0

Answer:

A. 0.5 m/s^2

Explanation:

The average acceleration is equal to the ratio between the change in velocity and the time elapsed:

a=\frac{\Delta v}{\Delta t}

The change in velocity between t=0 s and t=10 s is the change on the vertical axis:

\Delta v = 5 -0 = 5 m/s

Whule the time interval is

\Delta t = 10 s

So the average acceleration is

a=\frac{5 m/s}{10 s}=0.5 m/s^2

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The answer is  number 1
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3 years ago
A catcher in a baseball game stops a pitched ball that was originally moving at 44 m/s over a distance of 12.5 cm. the mass of t
eduard

Answer:

Force = -1161.6 Newton

Explanation:

Given the following data;

Initial velocity, u = 44m/s

Distance ,s = 12.5cm to m = 12.5/100 = 0.125m

Mass = 0.15kg

To find the acceleration;

We would use the third equation of motion;

V ² = U² + 2as

0² = 44² + 2*a*0.125

0 = 1936 + 0.25a

0.25a = -1936

a = -1936/0.25

Acceleration, a = -7744m/s2

Force = mass * acceleration

Substituting into the equation, we have;

Force = 0.15 * (-7744)

Force = -1161.6 Newton

The value of its force is negative because the glove decreases the velocity of the ball.

4 0
3 years ago
An 80.0 kg skier slides down a hill shaped as shown. Assume
umka21 [38]

The height above the ground from where the skier start is 11.5 m.

<h3>Conservation of energy</h3>

The height above the ground from where the skier start is determined by applying the principle of conservation of energy as shown below;

P.E = K.E

mgh = ¹/₂mv²

gh = ¹/₂v²

h = \frac{v^2}{2g} \\\\h = \frac{15^2}{2 \times 9.8} \\\\h = 11.5 \ m

Thus, the height above the ground from where the skier start is 11.5 m.

Learn more about conservation of energy here: brainly.com/question/166559

8 0
2 years ago
Which of the following statements best describes how waves interact with the media in which they move?
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Answer:

d

Explanation:

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If the volume of a sample of gas is reduced at constant temperature, the average velocity of the molecules _______, the average
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Answer:

Explanation:

If the volume of a sample of gas is reduced at constant temperature, the average velocity of the molecules increases, the average force of an individual collision increases, and the average number of collisions with the wall, per unit area, per second increases.

As volume is reduced, the gas molecules come closer together, which increases the number of collisions between them and their collisions with the container walls. Also, since the distance traveled by each molecule between successive collision decreases, the molecule velocity doesn't decrease much within collisions as a result of which, the average velocity is higher compared to when the gas is stored in a larger volume. Finally, due to constant collisions, the direction of molecule travel changes rapidly owing to which the acceleration of molecules increases.

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3 years ago
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