<p>Can you guys answer this one question for me please? It's a related rates shadow problem. I wasn't really sure of my answer.</p>
<p>A light on the grund 100 feet from a building is shining at a 6-foot tall man walking away from the streetlight and toward the building at the rate of 4 ft/sec. How fast is his shadow on the building becoming shorter when he is 40 feet from the building? </p>
<p>Thanks! I really appreciate it!</p>