A car is strapped to a rocket (combined mass = 661 kg), and its kinetic energy is 66,120 J.At this time, the rocket runs out of fuel and turns off, and the car deploys a parachute to slow down, and the parachute performs 36,733 J of work on the car.

What is the final speed of the car after this work is performed?

Answers

Answer 1

Answer:

9.43 m/s

Explanation:

The law of conservation of energy requires that the total energy before and after transformation must be equal. Kinetic energy of car and rocket combined equals the parachute energy and that of car.

Final energy of car will be 66120-36733=29,387 J

Kinetic energy, $KE=0.5mv^(2)$ and making v the subject of the formula then $v=\sqrt{\frac {2KE}{m}}$

Where m is the mass and v is velocity.

Substituting 29387 J for KE and 661 kg for m then

$v=\sqrt{\frac {2* 29387}{661}}=9.42957012478699\approx 9.43\ m/s$

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Answers

Answer:

When you burn 1 carbon, 2 atoms of oxygen will react with the carbon which forms carbon dioxide with 3 atoms. The law conservation applies since it states that mass can never be created nor destroyed. In simple terms, the amount used for the reaction should be the same amount produced.

Gravity affects all mass, how?

Answers

Answer:

Everything that has mass has gravity. The greater the amount of mass, the greater the gravity. And the closer objects are to each other, the stronger their gravitational pull is. The reason we have weight is because of the gravitational pull on our bodies (our mass) by the Earth.

Explanation:

Answer:

Explanation:

What determines the atomic number of an atom? A.
the number of neutrons in two atoms of an element

B.
the number of electrons in the outer layer of any atom

C.
the number of protons in every atom of an element

D.
the number of protons plus the number of neutrons in an atom

Answers

C. the number of protons in every atom. I hope this helped. :) Brainliest answer please? :)

The number of protons in the nucleus of an atom determines an element's atomic number.

In unsaturated fats, the fatty acid chain is missing some atoms of _____.

Answers

hydrogen atoms.

Explanation:

This is because unsaturated fatty acids have at least two double-bonded carbon atoms, so they cannot bond with the maximum number of hydrogen atoms.

Answer:

hydrogen atom

Explanation:

they have at least two double bonded carbon atoms,so they they can't bond with the maximum number of hydrogen atom

The force applied when using a simple machine ??

Answers

Answer : I hope this helps !

The Effort Force is the force applied to a machine. Work input is the work done on a machine. The work input of a machine is equal to the effort force times the distance over which the effort force is exerted.

Final answer:

In physics, force is defined as a push or pull that can change the state of motion or shape of an object. When using a simple machine, the force applied is the input force or effort force. The amount of force required to operate a simple machine depends on its mechanical advantage.

Explanation:

In physics, force is defined as a push or pull that can change the state of motion or shape of an object. When using a simple machine, such as a lever or pulley, the force applied is the input force or effort force.

The amount of force required to operate a simple machine depends on its mechanical advantage. Mechanical advantage is the ratio of the output force to the input force.

For example, if you are using a lever with a mechanical advantage of 3, and you apply an input force of 10 Newtons, the output force will be 3 times greater, which is 30 Newtons.