The initial velocity of the object is V0 = 5m / s, the initial acceleration is A1 = 4m / s # 178;, and the acceleration becomes A2 = 2m / s # 178; after moving for 2S What are the velocities at the end of 1s, 2S, 3S and 4S? The acceleration a decreases but the velocity V increases. Why?

There seems to be a problem. It takes time to speed up
According to v = V0 + at
v1=5+4*1=9
v2=5+4*2=13
v3=13+2*1=15
v4=13+2*2=17
The reason why the acceleration decreases and the speed increases is that the acceleration is the increase of the speed. No matter how small the increase is, it is also an increase. As we say, we walk forward, tired and full, but also forward. Isn't the distance getting longer? Think about it carefully, some problems need to be figured out by ourselves, remember a > 0

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