Final answer:
Pedestrian use of bicycle lanes is typically not allowed, as these lanes are meant for cyclists, but regulations can vary. Physically, cycling uphill increases potential energy and can make one feel exhausted, while cycling over hills transforms energy, with some loss as heat in the tires.Therefore, it is True.
Step-by-step explanation:
The legality of pedestrians using bicycle lanes varies by jurisdiction. Typically, bicycle lanes are designated for the exclusive use of cyclists to enhance their safety and the flow of traffic. Pedestrians are generally expected to use sidewalks or pedestrian paths.
However, in the absence of sidewalks or when crossing roads, pedestrians must be aware of traffic signals and use designated crossing points for safety. In situations where pedestrians use bicycle lanes, such as when a sidewalk is not available, they should remain alert to bicycles and other vehicles and move with caution.
In reference to the physics questions related to a cyclist's energy dynamics: True, riding a bicycle up a hill increases potential energy but may make you feel exhausted due to the conversion of kinetic energy into potential energy, which requires work against gravity. Similarly, True, a bicycle coasting down a hill and up another will stop at a lower point than it started if part of the original potential energy is converted to heat in the tires, reflecting energy losses in the system.Therefore, it is True.