The word atom comes from a Greek word that means “able to duplicate”.

1 answer:

3 0

<span>The statement, The word atom comes from a Greek word that means “able to duplicate”, is false. The greek word for atom is atomos. The a- in atom means “not” and –tom means “cut”. So it is not ot cut or it cannot be cut. It is common definition is indivisibility. This definition is defined by the philosopher Democritus. He observed that as he cut the sugar cube into smaller fraction, it reduces to nothing that cannot be seen in the eye. And so he proposed that definition.</span>

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Answer:

Approximately $\rm 2.5\; m \cdot s^{-1}$ .

Explanation:

Let the increase in the rocket's velocity be $\Delta v$ . Let $v_0$ represent the initial velocity of the rocket. Note that for this question, the exact value of $v_0$ doesn't really matter.

The momentum of an object is equal to its mass times its velocity.

Mass of the rocket with the 5 kg of fuel: $1000$ .
Initial velocity of the rocket and the fuel: $v_0$ .
Hence the initial momentum of the rocket: $1000\,v_0$ .

Mass of the rocket without that 5 kg of fuel: $1000 - 5 = 995$ .
Final velocity of the rocket: $v_0 + \Delta v$ .
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