1. The problem statement, all variables and given/known data What is the acceleration of a body which is moving in opposite direction(assuming negative velocity) and is speeding up? 2. Relevant equations acceleration=the rate of which an object changes its velocity 3. The attempt at a solution In my opinion, an object moves with a negative velocity and is speeding up can be regard as having negative acceleration. This is what I learn from the notes provided on Physics Classroom. Is this correct?