44C i think. Do you have options for the answer?
Answer:They come in different kinds, called elements, but each atom shares certain characteristics in common. All atoms have a dense central core called the atomic nucleus. Forming the nucleus are two kinds of particles: protons, which have a positive electrical charge, and neutrons, which have no charge
Explanation:
If you know the distance that an object travels in one unit of time, you can determine the velocity at which it was initially projected.
Answer is d using a heavier string