Q11: A and B, two people of identical height h, stand beneath a street lamp of height L. A walks in a straight line and at a constant speed away from the street lamp. One second later, B walks in a straight line and at the same speed, but in the opposite direction, away from the street lamp. As A and B move away from the lamp, their shadows grow longer. 2 marks: Let a be the length of A's shadow, and b be the length of B's shadow. Let :1: be the distance A has walked, and y be the distance B has walked. Draw and label a picture that illustrates the scenario two seconds after A begins to walk away from the street lamp. Your picture should indicate all relevant lengths and the associated variables. 4 marks: As A and B walk away from the lamp, both their shadows are getting longer. Whose shadow is changing length faster, two seconds after A left the lamp? Justify your