挑战习题
1/5单选题
难度:

1.

下列现象中,不能用惯性知识解释的是(  )


A

实心铁球从高处自由落下

B

人走路被障碍物绊倒时会向前倾倒

C

锤头松了,把锤柄的后端在物体上撞击几下,锤头就能紧套在锤柄上

D

子弹从枪膛里射出后,虽然不再受到火药的推力,但是仍然向前运动

提示1:
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正确答案:QQ==
PGRpdj5B44CB6ZOB55CD6Ieq55Sx6JC95LiL5a6e6ZmF5LiK5piv5Y+X5Yiw55qE6YeN5Yqb55qE5L2c55So77yM5Zug5q2k5LiN5piv5oOv5oCn6YCg5oiQ55qE77yM5LiN5ZCI6aKY5oSP77ybQuOAgUPjgIFE44CB5Lq65ZCR5YmN5YC+5YCS44CB6ZSk5aS05aWX57Sn6ZSk5p+E44CB5a2Q5by55ZCR5YmN6L+Q5Yqo6YO95piv5Zug5Li65a6D5Lus5YW35pyJ5oOv5oCn77yM5LuN6KaB5L+d5oyB5Y6f5p2l55qE6L+Q5Yqo54q25oCB77yM5omA5Lul5omN5Lqn55Sf5LqG5LiK6L+w546w6LGh77yM5Z2H56ym5ZCI6aKY5oSPPGJyPjwvZGl2Pg==