What are the energy requirements for Cycling?

Answer 1

Chemical energy from the food the rider has eaten gets turned into mechanical / kinetic energy as the bike picks up speed, potential energy if the rider heads uphill, and heat in the muscles, bearings and tires.

The bicycle by itself doesn't do any energy transformation. It just sits there, maybe rusting, rotting slowly.
A bicycle by itself only represents the energy tied up in its material, and maybe some potential energy depending on where it's at.

A human riding a bicycle will be using up chemical energy from the food he's eaten, and turning that into kinetic energy. If the ride takes him up a hill he will also gain potential energy.
A bicycle by itself only represents the energy tied up in its material, and maybe some potential energy depending on where it's at.

A human riding a bicycle will be using up chemical energy from the food he's eaten, and turning that into kinetic energy. If the ride takes him up a hill he will also gain potential energy.
a bicycle produces mechanical energy when you are pedaling!
A bicycle by itself doesn't use any energy at all, but a human riding a bicycle will be using up chemical energy from the food he's eaten, and turning that into heat and kinetic energy. If the ride takes him up a hill he will also gain potential energy.
Chemical energy in the food the rider has eaten turns into kinetic energy. If the rider is heading uphill it gets turned into potential energy as well.

Some of it turns into thermal energy in the muscles of the rider, in the tires, and in the bearings.
Chemical energy from what the rider has eaten gets turned into kinetic energy.
Energy isn't really produced, only transformed. Chemical energy in the shape of the food the rider has eaten gets turned into kinetic energy as the bike pick up speed, potential energy if the rider heads uphill, and then some heat in muscles, tires, and bearings.
When you are riding a bike you are converting chemical energy produced in your muscles to mechanical energy which is then divided between kinetic energy and frictional losses. When you come to a hill you are also gaining gravitational potential energy, which can then be converted to kinetic energy when you coast down the other side.
Physical-Mechanical-kinetic.
Chemical energy from ingested food is what gets used while riding a bike.
For a bicycle in use you have chemical energy from whatever food the rider has eaten getting turned into heat and kinetic energy. Potential energy too, if the rider heads uphill. According to accepted physics, energy can't be made, only changed from one type to another. In a bicycle, chemical energy from the food the rider has eaten is turned into kinetic energy, and also potential energy if the rider heads uphill.
Energy conversions for bicycle riding starts with :

• Chemical energy in the food the rider has eaten
• Becomes kinetic energy in the moving bicycle
• Potential energy if the ride goes uphill
• Thermal energy - heat. Mostly in the muscles of the rider, but also a tiny bit in tires and bearings.

Answer 2

Chemical energy and electric energy powers the factories that make bicycles

Answer 3

Depends on how hard and how long you ride. I use up 800-1000 calories for each hour ridden.

Answer 4

Chemical energy that you get from food.