Answer :
The semi-truck has more kinetic energy than the bicycle when traveling at the same speed.
Here's why:
1. **Formula for Kinetic Energy:** Kinetic energy is calculated using the formula KE = 0.5 * mass * velocity^2. The key factors affecting kinetic energy are the mass of the object and its velocity.
2. **Mass Difference:** A semi-truck is significantly heavier than a bicycle, meaning it has more mass. Since kinetic energy is directly proportional to mass, the semi-truck will have more kinetic energy due to its higher mass.
3. **Velocity Same for Both:** The question states that both the bicycle and the semi-truck are traveling at the same speed. Since velocity is a factor squared in the kinetic energy formula, the identical velocity means that the difference in kinetic energy will be primarily due to the mass difference.
4. **Conclusion:** Therefore, even though they are traveling at the same speed, the semi-truck will have more kinetic energy compared to the bicycle because of its higher mass.
