Question

what do you understand by positive, negative and zero acceleration​

Answer 1

Positive acceleration means acceleration in the direction of velocity ( it always increases the speed of particle). ... Zero acceleration means body is not accelerating, in this case it's velocity is constant . The body moves in a straight line, it neither speed up or down nor change direction .

Zero acceleration is easy: it means that the velocity is not changing as time goes on. Neither the speed nor the direction is changing .

Answer 2

Answer:

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Explanation:

Positive acceleration means acceleration in the direction of velocity ( it always increases the speed of particle). ... Zero acceleration means body is not accelerating, in this case it's velocity is constant . The body moves in a straight line, it neither speed up or down nor change direction .