For an object moving in a straight line with uniform deceleration, the velocity at a certain moment is 8m / s, and after 1s, the velocity becomes 4m / s, then the displacement of the object passing through in 1s

There are two cases
1, V0 = 8m / s, VT = 4m / s, a = (4-8) / 1 = - 4m / S ^ 2 can be obtained by substituting the velocity displacement relation formula: S1 = 6m
2, V0 = 8m / s, VT = - 4m / s, a = (- 4-8) / 1 = - 12m / S ^ 2, substituting into the velocity displacement relation formula, S2 = 2m

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