The slope of the velocity versus time graph of an object with positive velocity and acceleration is and the shape of the position versus time graph is a. negative, a flat line b. positive, a flat line c. negative, a line curved downward d. positive, a line curved upward

b. acid is the correct answer @jayxboof all social media

acid : acids are those which accepts an electron-pairs.

base : bases are those which donates ab electron-pairs.

alkali : it is a base that dissolves in water. it is basically a base and the ph greater than 7.

hydroxide ion : it is a poly-atomic ion which is negatively charged.