The object moves in a straight line with a uniform velocity of 5 m / s. The displacement in the third second is 2.5 m, and the acceleration of the object is the process of explanation and calculation

The object moves in a straight line with a uniform velocity of 5 m / s. The displacement in the third second is 2.5 m, and the acceleration of the object is the process of explanation and calculation

Analysis: the displacement of the first 3 seconds minus the displacement of the first 2 seconds is equal to 2.5m
S3-S2=2.5
V0*3+1/2a*3^2-(V0*2+1/2a*2^2)=2.5
a=-1m/s^2
Do even deceleration, the acceleration is 1