(Figure 1) A small source of light S
is located at a distance L
from a vertical wall. An opaque object with a height of h
moves toward the wall with constant velocity v⃗ of magnitude v. At time t=0 , the object is located at the source S.
Find an expression for vs
, the magnitude of the velocity v⃗ s
of the top of the object's shadow, at time t
.
Express the speed of the top of the object's shadow in terms of t , v , L , and h .
