A song child climbs a 11.5 - meter ladder to the top of a slide in 60 seconds 1 ) Find the gained potential energy in (JJ 2 ) Find the average power in ( W ) . 3 ) As the child slides down the Slide and reaches the bottom, his speed 18 12 m/s and the distance traveled along the slide is 10 0 m. Find the mechanical energy, in () lost by the child in sliding down the slide. 4 ) As the boy slides down the slide and reaches the bottom nis speed 15 12 m/s and the distance traveled along the slide is 108m. Petermine the average frictional force , in ( N) , acting on the boy