This lab shows how to determine the acceleration of a mass along a level plane using both a velocity vs. time graph and dynamics. This is the Lab 2 Tier 1 Challenge Set-Up. This set-up presents an “error” in conducting the trial which affects the student’s result. The challenge is for the student to determine what Danny did wrong in conducting his trial and determining how the error impacted the results. Download file includes the Video (MP4), an editable Lab Sheet (MS Word) for student use, and the Teacher’s Guide (PDF) for the instructor.