Question

how can acceleration be negative explain​

Answer 1

Explanation:

According to our principle, when an object is slowing down, the acceleration is in the opposite direction as the velocity. Thus, this object has a negative acceleration. In Example D, the object is moving in the negative direction (i.e., has a negative velocity) and is speeding up.

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Answer 2

Explanation:

Negative acceleration means that there is a decceleration that is taking place in the motion. This happens when the body attains initial velocity then suddenly it stops, making its final velocity to be equal to zero.