A rocket of mass M when empty carries a mass M of fuel. The rocket and fuel travel at speed v. The engine of the rocket is fired and a

Question

A rocket of mass M when empty carries a mass M of fuel. The rocket and fuel travel at speed v.
The engine of the rocket is fired and all of the fuel is expelled. The speed of the rocket increases
to 2v.

What happens to the kinetic energy of the rocket?
A It doubles.
B It halves.
C It increases by a factor of four.
D It stays the same.

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Thu Hương 3 months 2021-07-19T22:02:11+00:00 1 Answers 104 views 0

Answers ( )

    -2
    2021-07-19T22:03:41+00:00

    Answer:

    A

    Explanation:

    Finding the (maximum) respective prime powers would yield the answer. Also we need not … Is perfectly divisible by 720^n? … So we can say that for any positive value of n it not divisible.

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