A 25 kg child slides, from rest, down a playground slide that is 4.0 m long, as shown in the figure. The slide makes a 40 angle with the horizontal. The child's speed at the bottom is 3.2 m/s. What was; a) the force of friction that the slide was exerting on the child? 2 Marks b) the coefficient of kinetic friction? 2 Marks 40 4.0m c) the temperature change of the child's pants if there is no loss of energy to the environment? 1 Mark = Masspants 1 kg Cpants 250 J/KgC