A playground slide is in the form of an arc of a circle that has a radius of 12 m. The maximum height of the slide is h = 4.0m, and the ground is tangent to the circle (Figure). A 25 kg child starts from rest at the top of the slide and has a speed of 6.2 m/s at the bottom.(a) What is the length of the slide?(b) What average frictional force acts on the child over this distance? If, instead of the ground, a vertical line through the top of the slide is tangent to the circle, what are?(c) The length of the slide and(d) The average frictional force on thechild?