5 Points] DETAILS SCALCET9 3.9.018.MI. ASK YOUR TEACHER A spotlight on the ground shines on a wall 12 m away. If a man 2 m tall walks from the spotlight toward the building at a speed of 2.5 m/s, how fast (in m/s) is the length of his shadow on the building decreasing when he is 4 m from the building? (Round your answer to one decimal place.) m/s Need Help? Read It Master It