A child on a tricycle is moving at a speed of 1.40 m/s at the start of a 2.35 m high and 12.4 m long incline. The total mass is 51.5 kg, air resistance and rolling resistance can be modeled as a constant friction force of 41.0 N, and the speed at the lower end of the incline is 6.70 m/s. Determine the work done (in ]) by the child as the tricycle travels down the incline. X As the tricycle travels down the incline, there is a change in kinetic energy (it increases), there is a change in gravitational potential energy (it decreases), the change in internal energy consists of a "thermal" increase due to the frictional interaction, and a "chemical" decrease due to the child burning calories. J Need Help? Read It