2 years ago

The sum of kinetic energy of molecules in a body is ______

Physics

1 answer:

Margarita [4]2 years ago

6 0

Mechanical energy is the answer

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Answer:

9241.6 W or 12.39318 hp

Explanation:

u = Initial velocity = 0

v = Final velocity

m = Mass

t = Time taken

Energy

$KE=\frac{1}{2}m(v^2-u^2)\\\Rightarrow KE=\frac{1}{2}108(30.4^2-0^2)\\\Rightarrow KE=49904.64\ Joules$

Power

$P=\frac{KE}{t}\\\Rightarrow P=\frac{49904.64}{5.4}\\\Rightarrow P=9241.6\ W$

Converting to hp

$1\ W=\frac{1}{745.7}\ hp$

$\\\Rightarrow 9241.6\ W=\frac{9241.6}{745.7}\ hp=12.39318\ hp$

The power developed by the cheetah is 9241.6 W or 12.39318 hp

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2 years ago

أسقط عامل حجرة من سطح بناية سقوطأ حرة. أوجد ما يلي :

Ilia_Sergeevich [38]

Answer:

??? i don't no what you just said

Explanation:

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2 years ago

The sum of kinetic energy of molecules in a body is ______​

The sum of kinetic energy of molecules in a body is ______