Does anyone understand circuits?

Which of the following correctly describes the early view of catastrophism?

What happens to atoms and chemical bonds during a reaction?

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.