A light shines from the top of a pole 50 ft high. A ball is dropped from the same height from a point 40 it away from the light. How fast is the shadow of the ball moving Ball at time t=0 along the ground sec later? (Assume the ball falls a distance s = 161- in t sec.) sec later 50-ft pole Shadow 40 X x(t) The shadow is moving at a velocity of |ft/sec. (Type an integer or a decimal.)