urgent !!Question about Dynamics 1. The problem statement, all variables and given/known data A 2.0kg 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= 4s 2. Relevant equations 3. The attempt at a solution I used the equation V(f) = V(i) + area under the curve from 0s to t My solution was -6m/s I got that wrong.