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harina [27]
3 years ago
14

PLEASE HELP!!!! WILL GIVE BRAINLIEST!!!!

Physics
1 answer:
Svetach [21]3 years ago
4 0
There’s no image ???
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The source of the earth’s magnetic field is found in the _____.
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A roller coaster is stationary at the top of a ramp.
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A

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pychu [463]

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2. A person began running due east and covered 15 kilometers in 2.0 hours. What is the average velocity of the person?
Angelina_Jolie [31]

Answer:

7.5 km/h (2.1 m/s) due east

Explanation:

The average velocity of the person is given by:

v=\frac{d}{t}

where

d is the displacement

t is the time taken

In this problem,

d = 15 km is the displacement

t = 2.0 h is the time elapsed

so the average velocity is

v=\frac{15 km}{2.0 h}=7.5 km/h

and the direction is the same as the displacement (east).

We can also convert the velocity into SI units (m/s). We have:

d = 15 km = 15,000 m

t = 2.0 h * 3600 s/h = 7200 s

v=\frac{15,000 m}{7200 s}=2.1 m/s

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3 years ago
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