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zavuch27 [327]
3 years ago
9

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

Physics
2 answers:
kicyunya [14]3 years ago
8 0

Answer: the answer is 7200s

Explanation: i just now it

Please brainliest

Angelina_Jolie [31]3 years ago
4 0

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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How speed and position affect the energy possess by an object?​
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A large sheet of charge has a uniform charge density of 9  μCm2. What is the electric field due to this charge at a point just
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3 years ago
A violin string vibrates at 260 Hz when unfingered. At what frequency will it vibrate if it is fingered one fourth of the way do
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Answer:

346.66 Hz

Explanation:

l_1 = Length of string which is unfingered = l

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f_2 = Fingered frequency

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So,

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