So i know this is a lot to ask but i failed this test and i have a f and the quarter ends in like 2 weeks and i have no idea what i'm doing so if someone could me it would be really appreciated and also i have crossed out the ones i got right. and there might a few questions because it won't let me put more than one picture.

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present

What is the equation for electrical work?