1. The problem statement, all variables and given/known data At time t = 0 s, a mass of 5 kg is moving to the right at 12 m/s. Starting at t = 0 s, a constant force is applied to the mass until it is brought to rest over a distance of 120 m. Find the force acting to the right. A [0 N] B [3 N] C [-3 N] D [-3/5 N] E [2 N] 2. Relevant equations F = ma 3. The attempt at a solution This is a question on a sample multiple choice quiz my lecturer gave me. I'm torn between A and C it says find the force acting to the right but there is none. On the other hand the force acting relative to the right is -3N (taking the direction of its velocity as positive) Any help would be appreciated.