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Anuta_ua [19.1K]
3 years ago
15

Two identical objects are moving directly toward one another at the same speed v. ~v −~v m m What is the total kinetic energy of

the system of the two objects?
Physics
2 answers:
sineoko [7]3 years ago
7 0

Answer:

mv^2

Explanation:

Calling m the mass of each object and v its speed, the kinetic energy of one object is given by

K_1 = \frac{1}{2}mv^2

As we can see, the value of the kinetic energy depends only on the speed, not on the direction of the velocity. Therefore, the kinetic energy of the second object is the same:

K_2 = \frac{1}{2}mv^2

And so, the total kinetic energy is

K=K_1 +K_2 = \frac{1}{2}mv^2+\frac{1}{2}mv^2=mv^2

Natalka [10]3 years ago
5 0
<span>Answer: Correct answer is just add the two kinetic energies; E = (1/2)mv^2 + (1/2)mv^2</span>
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Answer:

The sphere C carries no net charge.

Explanation:

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3 years ago
group of students is making model cars that will be propelled by model rocket engines. These engines provide a nearly constant t
iris [78.8K]

Answer:

increase.

Explanation:

According to the newton’s second law of motion force is expressed as product of mass and acceleration.

F = m a

If the force acting is constant, then.

m∝ \frac{1}{a}

That is if the mass of object increases the acceleration decreases and vice versa. The above equation is used when the force acting on the body is constant.

As the thrust force from the rocket engine is constant throughout there will be a variation in the mass or acceleration.

Thus, it won't stay the same.

As the weight of the car is maximum at the start because of the fuel present in the rocket engine and minimum at the end as the fuel burns throughout the journey of the car. Weight will be minimum at the end and hence acceleration is maximum at the end.

Thus, it won't decrease.

As the acceleration is going from minimum at the start to maximum at the end, therefore it is continuously increases throughout its journey.

Thus, it will increase.  

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3 years ago
What is the significance of the fact that the gravitational constant, G, is a very small number and that Coulomb’s constant, k,
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When the two-vehicle collides transformation of the energy is done in terms of kinetic energy.

<h3>What is the law of conservation of energy?</h3>

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