This is a two page worksheet that asks students to calculate net force and then use Newton's 2nd Law of Motion to calculate acceleration or mass. There is also a place for students to then draw the vectors to scale to make the connection between calculating net force using trig functions and calculating net force graphically. The front side deals with all forces due north or due west, etc whereas the backside takes it up a notch and gives students force vectors that are 20 degrees north of west (for example). I am currently using this sheet with my Honors 9th grade physics class (they have all had some trig already), but I have used it in the past as a first or second worksheet for 11th or 12th graders taking their first year of physics.
Answer key is included.