. A bed frame has an area of 26, 128.98m and the width is 137.16m. What is the length of the bed in metres? *

Independent variable is something that is changed in a experiment. 

Velocity is the speed of an object in a certain direction so you'd need to know speed and direction

Answer///air resistance,drag;

Answer (d) the universe had cooled enough for atoms to combine, protons and neutrons were too far apart to form nuclei;