Yes, it is possible for an object with a constant negative acceleration to change direction. For example, a car moving forward can slow down and start moving backward due to the vector nature of acceleration. ;
An object with constant negative acceleration can change direction by first coming to a stop and then reversing its motion. This occurs because acceleration is a vector that can lead to a change in the object's velocity direction. For instance, a car slowing down while moving forward will eventually stop and can then move backward.
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