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katrin [286]
3 years ago
10

What Is Rotational Motion?​

Physics
2 answers:
mars1129 [50]3 years ago
8 0

Answer:

the motion of an object in a circular path , in a fixed orbit

vovangra [49]3 years ago
3 0

Answer:

<em><u>Rotational motion is a type of motion of an object around a circular path rotating in a fixed orbit. </u></em>

Explanation:

"me proving my innocence to my mom"

<h2 /><h2>I HOPE IT HElPS</h2>

have a great day

<u>#Liliflim</u>

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find the time taken, if the speed of a train increased from 72 km/hr to 90 km/hr for 234 km. leave your answer in seconds
Airida [17]

Answer:

Time taken = 10400 s

Explanation:

Given:

Initial speed of the train, u=72\textrm{ km/h}=72\times \frac{5}{18}=20\textrm{ m/s}

Final speed of the train, v=90\textrm{ km/h}=90\times \frac{5}{18}=25\textrm{ m/s}

Displacement of the train, S=234\textrm{ km}=234\times 1000=234000\textrm{ m}

Using Newton's equation of motion,

v - u = at\\a=\frac{v-u}{t}

Now, using Newton's equation of motion for displacement,

v^{2}-u^{2}=2aS

Now, plug in the value of a=\frac{v-u}{t} in the above equation. This gives,

v^{2}-u^{2}=2\times \frac{v-u}{t}\times S\\(v+u)(v-u)=\frac{2(v-u)S}{t}\\t=\frac{2(v-u)S}{(v+u)(v-u)}\\t=\frac{2S}{v+u}

Now, plug in 234000 m for S, 25 m/s for v and 20 m/s for u. Solve for t.

t=\frac{2S}{v+u}\\t=\frac{2\times 234000}{25+20}\\t=\frac{468000}{45}=10400\textrm{ s}

Therefore, the time taken by the train is 10400 s.

3 0
3 years ago
TRUE OR FALSE! PLZ HELP
Ksju [112]

Answer:

True

Explanation:

Magnitude is the "value" the greater the value the greater the force is and vice versa

5 0
2 years ago
Two point charges are arranged in a line with point P, which is on the right. The
MAVERICK [17]

Answer:

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2 years ago
Number of atoms of each element potassium chlorate?​
11111nata11111 [884]
5 atoms is the answer
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2 years ago
PLEASE HELP!!! I have so much work left to do. PLEASE!!!
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the answer is C.

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3 years ago
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