Author Question: Why can we never create matter? A) because matter is always conserved B) because energy is ... (Read 61 times)

Cooldude101 · **on:** Jul 29, 2018

Why can we never create matter?

A) because matter is always conserved
B) because energy is always conserved
C) because it is impossible to create the fundamental particles such as electrons and protons
D) because we aren't capable of creating another universal big bang
E) Actually, we do create matter frequently in the lab.

Question 2

For general projectile motion if we neglect air, the horizontal component of a projectile's acceleration

A) is always zero.
B) remains a non-zero constant.
C) continuously increases.
D) continuously decreases.
E) first decreases and then increases.