Extra Credit Opportunity

Based on the results of the test Friday, it looks like some folks might want some extra credit. I will be offering the following:
Opportunity 1: You can go through each of the multiple choice questions, and provide 1-2 sentences for which answer is correct and why.
Opportunity 2: You can create your own mechanics worksheet, with at least 6 different questions:
One for each of the missing variables, plus one that is missing two variables.
These questions can be similar to the ones on the worksheet given in class, but must contain different numbers you select, such as changing the time from 2.4 s to 7 s (and they can't be the same exact problem as anything online either).