Un gato camina sobre la cornisa de una casa cuya altura es desconocida; si el animal en un descuido cae al suelo en un tiempo de 3 s, ¿cuál será la velocidad de caída y la altura de
la casa?

s=44.1 m & v=29.4 m/s

Explanation:

s=ut+1/2at^2

s=0+1/2*9.8*3^2

s=4.9*9

s=44.1 m

v^2=u^2-2as

v^2=0-2*9.8*44.1

v^2=864.36

v=29.4 m/s

equal to 1
Explanation:
When any ray of light falls or strikes on a surface, the ray is reflected back and the angle of reflection is equal to angle of the incidence, where both the angles are always measured from the path of light that is normal to surface of the point at which the ray of light strikes the surface. This is called as the laws of reflection of light.
And therefore, the ratio of the angle of incidence to the angle of reflection is always equal to 1.