How can kinetic energy turn into potential energy?

Answer 1

The conversion of kinetic energy into potential energy (and vice versa) is a fundamental concept in physics and is often associated with the principles of mechanical energy conservation. The relationship between kinetic and potential energy is governed by the law of conservation of energy.

Gravitational Potential Energy:

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One common example involves the conversion of kinetic energy to gravitational potential energy and vice versa. Consider an object in free fall near the Earth's surface. As the object falls, it loses kinetic energy and gains gravitational potential energy. Conversely, if the object is lifted against gravity, it gains potential energy and loses kinetic energy.

Spring Potential Energy:

Another example involves the conversion of kinetic energy to elastic potential energy and vice versa. When a spring is compressed or stretched, it stores potential energy in the form of elastic potential energy. As the spring is released, this potential energy is converted into kinetic energy.

The mathematical expressions for these relationships are as follows:

Gravitational Potential Energy (U) and Kinetic Energy (K):

For an object of mass (m) at height (h) above the ground:

�

=

�

�

ℎ

U=mgh

�

=

1

2

�

�

2

K=

2

1

​

mv

2

where

�

g is the acceleration due to gravity, and

�

v is the velocity of the object.

The total mechanical energy (E) is the sum of kinetic and potential energy and remains constant in the absence of external forces (ignoring air resistance and other non-conservative forces):

�

=

�

�

E=U+K

Elastic Potential Energy (PE) and Kinetic Energy (K):

For an object attached to a spring with a spring constant (k) and displacement (x) from equilibrium:

�

�

=

1

2

�

�

2

PE=

2

1

​

kx

2

�

=

1

2

�

�

2

K=

2

1

​

mv

2

Again, the total mechanical energy is conserved in the absence of non-conservative forces.

In summary, the conversion between kinetic and potential energy depends on the specific forces at play (gravity, spring forces, etc.) and is governed by the law of conservation of energy. The total mechanical energy of a system remains constant in the absence of non-conservative forces.

Answer 2

first it goes kinetic energy, potential energy, mechanical energy, to chemical energy.

kinetic energy- moves energy to provide it

potential energy- stores energy to provide energy

mechanical energy- uses energy and provides it

chemical energy- energy that uses energy to provide energy but...makes the energy that we can use but is bad to use.(not good to use.)

Answer 3

Potential energy is sometimes called the energy of position. This means that it has the ability (potential) to become kinetic energy. A Bowling ball that is held over your head has potential energy. As soon as it is dropped and begins moving, the potential energy begins transforming into kinetic energy.

Answer 4

Kinetic energy can be transformed into potential energy by adding height to the system.

Looking at basic energy of mechanics, the total energy is equal to potential plus kinetic.

mgh + 1/2mv^2 = total energy

Because energy is conserved (without any work on the system), the final energy should be equal to the initial energy.

If the object is raised off the ground, more energy is transferred to potential, because "h" will increase. Because more energy is transferred to potential, energy will be taken away from kinetic by decreasing the velocity.

Answer 5

A good example of how you can turn Kinetic Energy into potential energy and vice versa is on a roller coaster. Since energy must be conserved according to the Law of conservation of energy, you can set your final energy and add it to your initial energy.

Let's assume I'm atop a frictionless roller coaster at 100m on earth and I am 50kg and I suddenly go down a 50 meter hill.

To calculate this, I need the potential & kinetic energy formula

PE = mass * gravity * height

KE = (1/2) mass * velocity^2

(50 * 9.8 * 100) + ((1/2) * 50 * 0^2) = ((1/2) 50 * v^2) + (50 * 9.8 * 50)

There's 49000 J in the system according to m * g * h, so use algebra to convert your potential energy to kinetic energy using the law of conservation of energy.

I got 31.3 m/s at the bottom of the hill, but suddenly I see there's another 40m tall hill in front of me (not possible to have a hill taller than the first hill because that would involve creating energy!)

(1/2 * 50 * (31.3)^2) + (50 * 9.8 * 50) = (50 * 9.8 * 40) + ((1/2) * 50 * v^2)

According to that, I am now moving at 34.292 m/s.

There's just one example of how you can convert kinetic energy to potential and potential to kinetic energy. For a more in-depth explanation, there's a lot of online resources.

Just search for the Law of Conservation of Energy and you should find tons of resources.

Hope that helped!

Answer 6

when it startes to move like bow pulled back then relesed

Answer 7

Yes.

Answer 8

true