A football player kicks a football off a tee with a speed of 21 m/s at an angle of 51°. a. How far is the ball from the football player when it lands? b. How far is the ball from the football player when it lands? c. Which ball will land first: the ball kicked at 21 m/s and at a 51° angle, or one kicked at 25 m/s and at a 65° angle?

it is because acrylic blanket have acrylic textile fiber

explanation:

its is better than wool blanket

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.

365.25 earth days are in the year of a light year