Buddy, can you spare a formula? Physics Expert Marcus has suggested first-year physics students get a list of formulas, memorize when they are used, and learn them. That is EXACTLY what I started to do earlier today! My list is very lean, however. Can anyone help us beginning students amass some formulas and hints on when to use them? I have gone thru the boards and looked for formulas, but honestly, I can't make heads nor tails out of them, especially those using calculus. Thanking you in advance. So far, I have (from Marcus et al) d=1/2gt^2 and one about when something is raised, it uses Joules, and is mgh where g is 10m/s^2. And I have F=ma, which someone else on the boards says uses N-s, and then a=F/m, which I guess will always have the time unit squared. But I have a=delta v/t interval of change, and which one is the best? And I've got p=mv (for momentum). I need work ones, power ones, impulse, KE, so forth. They are proliferating like a bunch of little bunnie rabbits. Thank you for any help. Perhaps if the weaker students such as myself get a good list of formulas, we will stop posting easy stuff and leave the boards clear for more intriguing problems! I solemnly promise to go away for at least a month.