Explain what it means when someone says energy can not be created or destroyed.

Physics

2 answers:

harina [27]2 years ago

8 0

Answer:

Newtons law of conservation energy says that energy cannot be created or destroyed because energy is always made into something else. It is always reused.

Explanation:

alexgriva [62]2 years ago

4 0

It means energy is in everything and can only be transferred not remade

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<h3>When is a particle at rest?</h3>

A particle is at rest when the initial velocity of the particle is zero.

The time when the particle is at rest is calculated as follows;

s(t) = 2t³ - 15t² + 33t + 17

$v = \frac{ds}{dt} = 6t^2 -30t + 33\\\\at \ rest, \ v = 0\\\\6t^2 - 30t + 33 = 0\\\\6(t- \frac{5}{2} )^2- \frac{9}{2} = 0\\\\t = 1.63\ s \ \ or \ 3.36 \ s$