Question

Bridget is riding her bicycle up a hill. Which statements are correct? Select five options.

Bridget is transferring energy to the bicycle.
The bicycle is using energy to do work.
Bridget has kinetic energy.
The bicycle has potential energy.
Bridget has nuclear energy.
The bicycle has mechanical energy.

Answer 1

Correct answers (five):

- Bridget is transferring energy to the bicycle. — Her muscles do work on the bike (chemical → mechanical energy).
- The bicycle is using energy to do work. — Energy supplied (from Bridget) is being used to overcome gravity and friction.
- Bridget has kinetic energy. — She is moving, so she has kinetic energy.
- The bicycle has potential energy. — Riding up a hill increases the bike’s gravitational potential energy.
- The bicycle has mechanical energy. — It has mechanical energy (kinetic + potential).

Incorrect:
- Bridget has nuclear energy. — Her usable energy for pedaling is chemical (from metabolism), not nuclear.