Answer:

Explanation:
Let the distance from spotlight to wall be 15m, and distance from the man to the building be
.
#Therefore the height of the shadow as a function of the above is 
Hence, height of the shadow is expressed as s=(15-x)m
#See attached photo for illustration
Answer:
The force of the nail pushing in the opposite direction
Shape of the nose is entirely hereditary, as genes have nothing to do with any of the other attributes.
Explanation:
It varies with altitude, but at sea level, it's 9.8 m/s².