中学生网络课堂本课配套习题挑战模式2/5
单选题
难度系数：
2.自由下落的物体，它下落一半高度所用的时间和全程所用的时间之比是（ ）
A: |
B: |
C: |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：IOS4i+iQveS4gOWNiumrmOW6puaJgOeUqOaXtumXtOS4ujxpbWcgd2lkdGg9MTA5IGhlaWdodD02MSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwL0YwLzYyL3JCQUNGRk5neXp5VHhSb3pBQUFEenh1LTNuNDIwMy5wbmciPg==
- 提示2：IOS4i+iQveWFqOeoi+aJgOeUqOaXtumXtOS4ujxpbWcgd2lkdGg9NTQgaGVpZ2h0PTQ1IHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvRjAvNjIvckJBQ0ZGTmd5ejJqUUhqOUFBQUNnTTMtRGhZOTczLnBuZyI+
- 答案：Qw==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.一个物体从塔顶上下落，在到达地面前最后
内的位移是整个位移的
，求塔高.
内的位移是整个位移的，求塔高. | A: 122.5m |
| B: 100m |
| C: 110.5m |
| D: 112.5m |
一次做对，真牛！
+5奖励规则>
- 提示1：IOeJqeS9k+acgOWQjjxpbWcgd2lkdGg9MTcgaGVpZ2h0PTE4IHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMkMvNkIvckJBQ0UxTmd5MEdpNHl5NkFBQUJHbnFFR2NJNjgzLnBuZyI+5YaF55qE5L2N56e75piv5pW05Liq5L2N56e755qEPGltZyB3aWR0aD0yMiBoZWlnaHQ9Mzggc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8yQy82Qi9yQkFDRTFOZ3kwS0NUY2xJQUFBQnVWNlhoaGs0OTMucG5nIj4=
- 提示2：IOaJgOS7pTxpbWcgd2lkdGg9NDYgaGVpZ2h0PTE4IHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvRjAvNjIvckJBQ0ZGTmd5MEt4UXA2dUFBQUJuQ3VPdFNFNDM5LnBuZyI+5YaF55qE5L2N56e75piv5pW05Liq5L2N56e755qEPGltZyB3aWR0aD0yMiBoZWlnaHQ9Mzggc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yQy82Qi9yQkFDRTFOZ3kwTFEyaUFJQUFBQjMzSXItd2sxODIucG5nIj4=
- 答案：QQ==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.已知某一物体从楼上自由落下，经过高为
的窗口所用时间为
，物体是从距离窗顶多高处自由落下的（
）
的窗口所用时间为，物体是从距离窗顶多高处自由落下的（） | A: 4m |
| B: 4.05m |
| C: 3m |
| D: 3.05m |
一次做对，真牛！
+5奖励规则>
- 提示1：IOiuvueJqeS9k+WcqOS4i+iQvei/h+eoi+S4re+8jOWHuueOsOWcqOeql+WPo+S4iuaWueeahOaXtumXtOS4ujxpbWcgd2lkdGg9MTMgaGVpZ2h0PTIyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvRjAvNjIvckJBQ0ZGTmd5MGZqM1pLWEFBQUJFNnZuMDRzMzk0LnBuZyI+77yM56a75byA56qX5Y+j55qE5pe26Ze05Li6PGltZyB3aWR0aD0xNCBoZWlnaHQ9MjIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9GMC82Mi9yQkFDRkZOZ3kwZkRranM4QUFBQk1zWTlId3c1MDIucG5nIj4=
- 提示2：IOWImeacie+8mjxpbWcgd2lkdGg9MTIwIGhlaWdodD0zOCBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzJDLzZDL3JCQUNFMU5neTBqaDZwOS1BQUFEVnR4R3BKUTU0MC5wbmciPu+8jDxpbWcgd2lkdGg9NzMgaGVpZ2h0PTIyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvRjAvNjIvckJBQ0ZGTmd5MGlpQ2xUVkFBQUNPd1pWLTZJMzAzLnBuZyI+
- 答案：Qg==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.从某一高度相隔
先后由静止释放的两个相同的小球甲和乙，不计空气阻力，它们在空中的任一时刻（ ）
先后由静止释放的两个相同的小球甲和乙，不计空气阻力，它们在空中的任一时刻（ ） | A: 甲、乙两球距离越来越大，甲、乙两球速度之差越来越大 |
| B: 甲、乙两球距离始终保持不变，甲、乙两球速度之差保持不变 |
| C: 甲、乙两球距离越来越大，但甲、乙两球速度之差保持不变 |
| D: 甲、乙两球距离越来越小，甲、乙两球速度之差越来越小 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOiuvuWQjumHiuaUvueahOeQg+i/kOWKqOaXtumXtOS4ujxpbWcgd2lkdGg9MTAgaGVpZ2h0PTE2IHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvRjAvNjIvckJBQ0ZGTmd5MHlRWlhKakFBQUJBUjl1NTlVNTIzLnBuZyI+
- 提示2：IOWImeWug+S7rOS5i+mXtOeahOi3neemuzxpbWcgd2lkdGg9MTkwIGhlaWdodD0zOCBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzJDLzZDL3JCQUNFMU5neTB6aTlBM3RBQUFFSVhTcXlwazc5MS5wbmciPg==
- 答案：Qw==
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
