How will the average acceleration change if we consider the following cases: 1) the point has passed a quarter of a turn

How will the average acceleration change if we consider the following cases: 1) the point has passed a quarter of a turn; 2) the point has passed half a turn; 3) the point has made a full turn.

1) the point has passed a quarter of a turn – the acceleration will be the same in magnitude, but will be directed at an angle of 90 ° to the original:
2) the point has passed half a turn – the acceleration will be the same in magnitude, but will be directed opposite to the original one:
3) the point has made a full revolution – the acceleration will be equal to the initial one.

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