Answer:
I think it's c .... fulcrum
The big bang is how astronomers explain the way the universe began. It is the idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right now (and it could still be stretching).
Answer:D.Refractive Indez
Explanation:
It is usually expressed the other way: the ratio of the speed of light in a vacuum to the speed of light in a medium. In that case, it is called the "index of refraction".
Answer:
time taken.
Explanation:
F = ma
F = m × (v - u) / t
F = mv - mu / t
mv - mu = change in momentum