Consider the following. a + W = s (a) Find y' by implicit differentiation. r y: (b) Solve the equation explicitly for y and differentiate to get y' in terms of x. r y: (c) Check that your solutions to parts (a) and (b) are consistent by substituting the expression for y into your solution for part (a). r y: Need Help? [-/1 Points] DETAILS SCALCET9M 3.9.015. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A street light is mounted at the top of a 6-meter-tall pole. A man 2 m tall walks away from the pole with a speed of 1.4 m/s along a straight path. How fast (in m/s) is the tip of his shadow moving when he is 20 m from the pole? m/s