Kinetic energy is calculated as such:
| therefore, 
Answer:
Drag or air resistance
Explanation:
The force of friction caused by a moving fluid is called drag. When that fluid is air, it's also known as air resistance.
Answer:
A related type of beta decay
Explanation:
Answer:
A
Explanation:
Begin as protostars, which fire up when they collapse and become denser and hotter.