How much force, does a 45,000-kg cargo jet have to generate to accelerate at a rate of 1.75 m/s2?

the answer will be a) proteins i believe

yes, because even though a theory has a  lot of evidence to support it, it is not always true

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question