A light shines from the top of a pole 40 ft high. A ball is dropped from the same height from a point 30 ft away from the light. How fast is the shadow of the ball moving along the ground - sec later? (Assume the ball falls a distance s = 16t in t Ball at time =0 sec.) 1 sec later 40-ft pole Shadow 30 X x(1) The shadow is moving at a velocity of |fusec. (Type an integer or a decimal.)