Hi there!
The energy that is about to or can be released from an object after energy has been transferred to it is called potential energy. In this case, as the diver jumps, potential energy is stored in the board as it bends. The potential energy is then released as kinetic energy when the board springs back up and the diver actually jumps.
Hope this helps!
To develop this problem it is necessary to apply the equations related to the conservation of the moment, for which it is necessary that the velocities and the mass in an initial state must be equal to the mass and the velocity at the end point. Mathematically this can be described as

= Mass of object 1
= Mass of the object 2
= Initital velocity of object 1 and 2
= Final velocity of object 1 and 2
Our values are given as,


There is not initial velocity, i.e, they are initially at rest.
We have the final velocity of the first object

Replacing we have:



Therefore, the speed of the second block will be -20m / s or 20m / s if our vector reference system becomes positive for that direction. The correct answer is C.
Answer:
What part of the light wave is related to the brightness of the light?
Amplitude
The amplitude of a wave tells us about the intensity or brightness of the light relative to other light waves of the same wavelength
The brightness of light is related to intensity or the amount of light an object emits or reflects. Brightness depends on light wave amplitude, the height of light waves. Brightness is also somewhat influenced by wavelength.
The variable represented by that symbol is: d. Net force.