hey pple, can help me with these 2 qns? what are the steps?
q1 A man 1.5m tall walks at a rate of 1.2 m/s directly away from a street light which is 6m above the street.
(i) At what rate is the tip of his shadow changing?
(ii) At what rate is the length of his shadow changing?
q2 A train starting at 1100 hrs travels east 75 km/h while another starting at noon from the same point, travels south at 100km/h. how fast are they seperating at 1500 hrs