2-kg bowling ball falls off a 40 meter high building at a rate of 19.8 meter per second 1. Does the bowling ball have more potential energy or kinetic energy as it sit on top of the building? Why?

The bowling ball will have more potential energy as it is at rest.

Explanation:

Since, the ball is said to have a mass of about 2 kg and it falls off a 40 meter high building at a rate of 19.8 m/s. So if we have to determine the energy experienced by the ball when it is sitting on the top of the building, then we have to measure its potential energy only. Because, it is known that when an object is at rest, it has dominant potential energy stored in it and at that time there is no kinetic energy experienced by that object.

Thus, the potential energy will only be more in this case and there will not be any kinetic energy acting on the ball when it is sitting on top of the building.

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle  

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.

not too sure thinking all accelerations are pointed down