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alekssr [168]
2 years ago
7

A car speeds up from 3 m/s to 10 m/s in 8 s. How far does the car travel while doing this? 2. A

Physics
1 answer:
yarga [219]2 years ago
5 0

Initial velocity=u=3m/s

Final velocity=v=10m/s

Time=t=8s

\boxed{\sf Acceleration=\dfrac{v-u}{t}}

\\ \sf\longmapsto Acceleration=\dfrac{10-3}{8}

\\ \sf\longmapsto Acceleration=\dfrac{7}{8}

\\ \sf\longmapsto Acceleration=0.8m/s^2

  • Distance =s

Using second equation of motion

\\ \sf\longmapsto s=ut+\dfrac{1}{2}at^2

\\ \sf\longmapsto s=3(8)+\dfrac{1}{2}(0.8)(8)^2

\\ \sf\longmapsto s=24+0.4(64)

\\ \sf\longmapsto s=24+25.6

\\ \sf\longmapsto s=49.6m

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A submersible pump is put under the water at the bottom of a well and is used to push water up through a pipe. What minimum outp
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Radio waves

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A volcano erupts and launches a chunk of hot magma horizontally with a speed of 252 m/s. The magma travels a horizontal distance
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Answer:

The value is v_y  =  -48.61 \ m/s

Explanation:

From the question we are told that

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Generally the time taken by the hot magma in air before landing is mathematically represented as

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=>    t = \frac{ 1250 }{252}

=>    t = 4.96 \  s

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Then the final velocity of the magma when it hits the ground is mathematically represented s

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Here the negative sign mean that the direction of the velocity is towards the negative y -axis

So  

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2 years ago
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