本课配套习题挑战模式1/5
A: 河里的水不能流动 |
B: 玻璃杯摔在地上碎了 |
C: 杯中的水倒不进嘴 |
D: 重物压在身上,我们感觉不到重量 |
- 提示1:5rKz6YeM55qE5rC05LmL5omA5Lul5Lya5LuO6auY5aSE5ZCR5L2O5aSE5rWB5Yqo77yM5bCx5piv5Zug5Li65Y+X5Yiw5Zyw55CD6YeN5Yqb55qE57yY5pWF
- 提示2:5p2v5Lit55qE5rC05piv5Zug5Li66YeN5Yqb5L2c55So6ICM5ZCR5LiL5rWB5YWl5Zi06YeM77yM5aaC5p6c5rKh5pyJ6YeN5Yqb5L2c55So77yM5YiZ5p2v5Lit55qE5rC05bCx5LiN5Lya5YaN5ZCR5LiL5rWB5LqG
- 提示3:55Sx5LqO5rKh5pyJ6YeN5Yqb5L2c55So77yM5Zug5q2k6YeN54mp5Y6L5Zyo6Lqr5LiK77yM5oiR5Lus5oSf6KeJ5LiN5Yiw6YeN6YeP77yM6K+l6YCJ6aG55o+P6L+w546w6LGh5Lya5Y+R55Sf
- 答案:Qg==
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
本课配套习题挑战模式2/5
关于重力下列说法正确的是( )
A: 重力的大小为9.8 |
B: 重力是物体本身产生的力 |
C: 重力的方向是竖直向下的 |
D: 重力的方向是垂直向下的 |
- 提示1:PHA+6YeN5Yqb5piv55Sx5LqO5Zyw55CD55qE5ZC45byV6ICM5L2/54mp5L2T5Y+X5Yiw55qE5YqbPC9wPg==
- 提示2:PHA+6YeN5Yqb55qE5pa55ZCR5piv56uW55u05ZCR5LiL55qEPC9wPg==
- 答案:Qw==
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
本课配套习题挑战模式3/5
下列关于重力的说法不正确的是( )
A: 在空中的物体不会受到重力 |
B: 相同质量的物体在月球上的重力比地球上的重力小 |
C: 在地球上不同的地方,相同质量的物体,重力可能不一样。 |
D: 重力的大小与质量成正比 |
- 提示1:PHA+5Zyw55CD6ZmE6L+R55qE5LiA5YiH54mp5L2T55Sx5LqO5Zyw55CD5ZC45byV6ICM5L2/54mp5L2T5Y+X5Yiw55qE5Yqb5Y+r6YeN5YqbPC9wPg==
- 提示2:PHA+6YeN5Yqb55qE5pa55ZCR5oyH5ZCR5Zyw5b+DPC9wPg==
- 提示3:PHA+6LSo6YeP6LaK5aSn55qE54mp5L2T5Y+X5Yiw55qE6YeN5Yqb5Lmf6LaK5aSnPC9wPg==
- 答案:QQ==
PHA+QeOAgeWcsOeQg+mZhOi/keeahOS4gOWIh+eJqeS9k+eUseS6juWcsOeQg+WQuOW8leiAjOS9v+eJqeS9k+WPl+WIsOeahOWKm+WPq+mHjeWKm++8jOepuuS4reeahOeJqeS9k+WQjOagt+imgeWPl+WIsOWcsOeQg+eahOmHjeWKm+S9nOeUqO+8jOWmguWcqOepuuS4remjnuihjOeahOi2s+eQg+eUseS6juWni+e7iOWPl+WIsOmHjeWKm+eahOS9nOeUqO+8jOiAjOayv+absue6v+i/kOWKqOW5tuacgOe7iOiQveWbnuWcsOmdou+8jOaJgOS7pemAiemhuUHmmK/plJnor6/nmoQ8YnI+PGJyPjwvcD4=
本课配套习题挑战模式4/5
A: 物体上升过程中运动越来越慢,是由于受到的重力变大 |
B: 物体下降过程中运动越来越快,是由于受到的重力变大 |
C: 物体上升到最高点时静止,是由于不受重力作用 |
D: 在整个过程中物体受到的重力不变 |
- 提示1:54mp5L2T5ZCR5LiK5oqb5Ye65ZCO55qE6L+Q5Yqo6L+H56iL5Lit54mp5L2T5omA5Y+X55qE6YeN5Yqb5LiO54mp5L2T55qE6L+Q5Yqo54q25oCB5peg5YWz
- 答案:RA==
5Zyo54mp5L2T5ZCR5LiK5oqb5Ye65ZCO55qE6L+Q5Yqo6L+H56iL5Lit54mp5L2T5omA5Y+X55qE6YeN5YqbRz1tZ++8jOS4jueJqeS9k+eahOi/kOWKqOeKtuaAgeaXoOWFs++8jOWkp+Wwj+S4juaWueWQkemDveS4jeWPmO+8jjxicj7mlYXpgIlE77yO
本课配套习题挑战模式5/5
A: 地球上任何物体所受重力的施力物体都是地球 |
B: 地球上任何物体所受重力的方向总是竖直向下的 |
C: 地球表面附近物体所受重力跟它的质量成正比 |
D: 因为g=9.8牛/千克,所以1千克就等于9.8牛 |
- 提示1:6YeN5Yqb6YO95piv5Y+X5Zyw55CD55qE5ZC45byV6ICM6I635b6X55qE
- 提示2:6YeN5Yqb5ZKM5pa55ZCR5oC75piv56uW55u05ZCR5LiL
- 提示3:54mp5L2T55qE6YeN5Yqb6Lef5a6D55qE6LSo6YeP5oiQ5q2j5q+U
- 答案:RA==
QeOAgemHjeWKm+mDveaYr+WPl+WcsOeQg+eahOWQuOW8leiAjOiOt+W+l+eahO+8jOaJgOS7peato+ehru+8mzxicj5C44CB6YeN5Yqb5ZKM5pa55ZCR5oC75piv56uW55u05ZCR5LiL77yM5oyH5ZCR5Zyw5b+D55qE77yM5omA5Lul5q2j56Gu77ybPGJyPkPjgIHniankvZPnmoTph43lipvot5/lroPnmoTotKjph4/miJDmraPmr5TvvIzmr5TlgLzkuLo5LjhOL2tn77yM5omA5Lul5q2j56Gu77ybPGJyPkTjgIEx5Y2D5YWL5piv6LSo6YeP77yMOS4454mb5piv5Yqb77yM5a6D5Lus5LmL6Ze05Y2V5L2N5LiN5ZCM77yM5LiN6IO955S7562J5Y+377yM5omA5Lul6ZSZ6K+v77yOPGJyPuaVhemAiUTvvI4=