Final answer:
To find Shawn's kinetic energy, we need his velocity, which is not provided. Converting the distance covered and time taken into meters and seconds respectively allows us to calculate velocity but without it, we cannot accurately determine the kinetic energy.
Step-by-step explanation:
To determine Shawn's kinetic energy (KE) as he rides at a constant velocity, we can use the kinetic energy formula KE = 0.5 × m × v^2, where m is the mass and v is the velocity. However, the provided information does not include Shawn's velocity. It's only given that he covers 2 km in 11.7 minutes, and assuming there's no acceleration or deceleration since he's moving at a constant velocity. To calculate the kinetic energy, we would first need to convert 11.7 minutes to seconds (11.7 × 60 = 702 seconds) and 2 km to meters (2 × 1000 = 2000 meters). Then, we calculate velocity: v = distance/time = 2000/702 ≈ 2.85 m/s. Finally, calculate the KE with Shawn's total mass (47.2 kg): KE = 0.5 × 47.2 kg × (2.85 m/s)^2. Unfortunately, without the velocity, we cannot accurately compute the kinetic energy or choose the correct answer from the provided options.