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lbvjy [14]
2 years ago
8

a car is running with the velocity of 72 km/h . what will be it's velocity after 5 seconds if it's acceleration -2 m/s² ?​

Physics
1 answer:
sladkih [1.3K]2 years ago
8 0

Answer:

Explanation:

79 second

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A satellite is in a circular orbit 21000 km above the Earth’s surface; i.e., it moves on a circular path under the influence of
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                                  = 2.737 × 10⁷m

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Orbital Speed (V₀) = √(2.737 × 10⁷  × 0.532655 )

                              = 3818.215

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To find the time it takes to complete one orbit around the Earth; we use the formula:

Time (t) = 2 π × \frac{r}{V_o}

            = 2 × 3.14 × \frac{2.737*10^7}{3.818*10^3}

            = 45019.28

            = 4.5 × 10 ⁴ s

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