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cecilysimpson3089
05.05.2020 •
Physics
So many people keep reporting and deleting my questions song what are all the substances on earth
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Ответ:
Solids, liquids, gases
And I know I answered one of them and it got deleted
Explanation:
Ответ:
God
Explanation:
God is all things all things are god
Ответ:
d = 2.54 [m]
Explanation:
Through the theorem of work and energy conservation, we can find the work that is done. Considering that the energy in the initial state is only kinetic energy, while the energy in the final state is also kinetic, however, this is zero since the body stops.
where:
W = work [J]
Ek1 = kinetic energy at initial state [J]
Ek2 = kinetic energy at the final state = 0.
We must remember that kinetic energy can be calculated by means of the following expression.
We know that work is defined as the product of force by distance.
where:
F = force [N]
d = distance [m]
But the friction force is equal to the product of the normal force (body weight) by the coefficient of friction.
Now solving the equation for the work.