Answer: B. II and III only
Explanation:
Let’s begin by explianing what energy is: the ability of matter to produce work in the form of movement, light, heat, among others. In this sense, there are several types of energy, but we will talk especifically in this case about <u>kinetic energy</u> and <u>potential energy</u>.
<u>Kinetic energy </u>is the energy an object or body has due to its movement and depends on the mass and velocity of the object or body.
To understande it better: If an object is at rest, its velocity is null and it does not have kinetic energy, however, if the object is moving, then it has kinetic energy.
On the other hand, <u>Potential energy</u> is known as <em>“stored energy”</em> that has the potential to be converted into energy of motion (kinetic energy) or another type of energy (thermal energy, for example). In addition, this energy is related to the work done when a certain force moves an object or body from its natural resting state along a distance to a new position.
So, according to this, Kinetic energy can be transformed into potential energy and Potential energy can be transformed into kinetic energy or any other type of energy. Hence, options II and III are correct.
Answer:
4800N
Explanation:
Lets assume,
Mass of first object = m₁
Mass of second object = m₂
Distance between the two objects = r
Thus the force between the two objects will be
![F = \frac{G\times m_{1}\times m_{2}}{r^{2}}](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7BG%5Ctimes%20m_%7B1%7D%5Ctimes%20m_%7B2%7D%7D%7Br%5E%7B2%7D%7D)
where, G = Universal gravitational constant
Given, F = 2400N
New mass of second object = 2m₂
Now, the force will be
![F_{2} = \frac{G\times m_{1}\times 2m_{2}}{r^{2}}](https://tex.z-dn.net/?f=F_%7B2%7D%20%3D%20%5Cfrac%7BG%5Ctimes%20m_%7B1%7D%5Ctimes%202m_%7B2%7D%7D%7Br%5E%7B2%7D%7D)
![F_{2}= 2\frac{G\times m_{1}\times m_{2}}{r^{2}}](https://tex.z-dn.net/?f=F_%7B2%7D%3D%202%5Cfrac%7BG%5Ctimes%20m_%7B1%7D%5Ctimes%20m_%7B2%7D%7D%7Br%5E%7B2%7D%7D)
![F_{2}= 2F](https://tex.z-dn.net/?f=F_%7B2%7D%3D%202F)
![F_{2}= 2\times2400](https://tex.z-dn.net/?f=F_%7B2%7D%3D%202%5Ctimes2400)
Thus, F₂ = 4800N
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