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vivado [14]
3 years ago
12

dialects are defined as regional variations of a language and are distinguished by three things. what are they

Advanced Placement (AP)
1 answer:
iragen [17]3 years ago
8 0

1- Distinctive Vocabulary

2- Spelling

3- Pronunciation

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A ball is thrown at the ground from the top of a tall building. The speed of the ball in meters per second is v(t)=9.8t+v0, were
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Answer:

      V_0=2.7m/s

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     V(2)=9.8(2)+V_0\\\\V(2)=19.6+V_0

If the ball travels 25 meters during the first 2 seconds after it is thrown, what was the initial speed of the ball

Also, for constant acceleration motion, the average velocity is equal to the sum of final and initial velocities divided by 2 and to the distance divided by the time:

         \dfrac{V(t)+V_0}{2}=\dfrac{d}{t}

Where you know:

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  • V(2)=9.8(2)+V_0=19.6+V_0
  • d = 25m

Substituting (the units are ommited in the equationn, but added at end of the answer):

     \dfrac{V(2)+V_0}{2}=\dfrac{25}{2}

     V(2)+V_0=25

Thus, you have a system of equations:

     V(2)+V_0=25

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Substituting the second into the first:

      19.6+V_0+V_0=25\\\\19.6+2V_0=25

      2V_0=25-19.6\\\\V_0=5.4/2\\\\V_0=2.7m/s

5 0
3 years ago
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