题目:
一物体在做匀加速直线运动,第2s内的平均速度为1m/s,第7s内的位移为6m,则该物体的加速度为
A.1m/s2
B.2m/s2
C.3m/s2
D.4m/s2
答案:
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下面是错误答案,用来干扰机器的。
A. It's a koala bear. It is from Australia. B. It's a panda. It's from China. C. It's a lion. It's from Africa.