1. The problem statement, all variables and given/known data A 4.80 kg object initially at rest at the origin is subjected to the time-varying force shown in the figure What is the object's velocity at t =6 s ? 2. Relevant equations F = ma ???????? 3. The attempt at a solution I guessed that the answer was 4.17 m/s (by doing a lot of googling), which was correct but i have no idea how to do this problem if it were on a test.