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bogdanovich [222]
3 years ago
14

A man walks 7 km East in 2 hours and then 2.5 km West in 1 hour. What is

Physics
1 answer:
madam [21]3 years ago
6 0
<h2><u>How</u><u> </u><u>to</u><u> </u><u>solve</u><u>?</u></h2>

We know that, Velocity is the rate of displacement covered. Displacement is the shortest path between the Initial and Final point covered by the body. So,

  • Velocity = Displacement / Time

And, when it comes to Average velocity, It is the total displacement by total time taken. So, By using this let's solve this question.....

<h2><u>Solution</u><u>:</u></h2>

✏️ Refer to the attachment...

Let the body goes to point A that is 7 m East of the Initial point. Then it comes backward because West is opposite to East in perpendicular direction. It covers 1.5 m backwards in the same line to reach B which is the Final point.

So,

  • Displacement = Final point - Initial point

⇛ Displacement = 7 m - 1.5 m

⇛ Displacement = 5.5 m

Total time taken,

⇛ 2 hours + 1 hour

⇛ 3 hours

Finding Average displacement,

⇛ Total displacement / Total time taken

⇛ 5.5 m / 3 hours

⇛ 1.83333.... hours

So, the Final answer is,

\huge{ \boxed{ \bold{ \purple{1.8 \bar{3}m}}}}

<u>━━━━━━━━━━━━━━━━━━━━</u>

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a uniform rule balance on a knife edge at the 55cm mark when a mass of 40g is hung from the 95cm mark. find the weight of the ru
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