When an object moves in a straight line with uniform acceleration, its displacements in the third and sixth seconds are 2.4m and 3.6m respectively?

When an object moves in a straight line with uniform acceleration, its displacements in the third and sixth seconds are 2.4m and 3.6m respectively?

(1) According to the successive difference equation △ x = XM − xn = (m − n) at2, there is X6 − X3 = 3at2, so a = X6 − x33t2 = 3.6 − 2.43 × 12m / S2 = 0.4m/s2 (2) because the displacement of 3S is 2.4m, according to the displacement formula, there is x3 = S3 − S2 = (v0t3 + 12at32) − (v0t2 + 12at22) substituted into the data, and 2

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