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Georgia [21]
3 years ago
6

**WILL MARK BRAINLIEST IF CORRECT**

Physics
1 answer:
jok3333 [9.3K]3 years ago
8 0

Answer:

a

Explanation:

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Chris walks 25 m in the positive direction on a number line, then turns around and walks 15 m in the opposite direction. What is
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How much voltage is required to run 0.64 A of current through a 240 resistor? Use V= IR.
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A 50kg meteorite moving at 1000 m/s strikes Earth. Assume the velocity is along the line joining Earth's center of mass and the
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As per the question, the mass of meteorite [ m]= 50 kg

                       The velocity of the meteorite [v] = 1000 m/s

When the meteorite falls on the ground, it will give whole of its kinetic energy to earth.

We are asked to calculate the gain in kinetic energy of earth.

The kinetic energy of meteorite is calculated as -

                                       Kinetic\ energy\ [K.E]\ =\frac{1}{2} mv^2

                                                             =\frac{1}{2}50kg*[1000\ m/s]^2

                                                               =\frac{1}{2}50* 10^{6}\ J

                                                               =25*10^6\ J    

Here, J stands for Joule which is the S.I unit of energy.

Hence,\ the\ kinetic\ energy\ gained\ by\ earth\ is\ 25*10^6\ J

4 0
3 years ago
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A tortoise and a hare are having a 1,000-meter race. The tortolse runs the
lukranit [14]

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