物体(用字母O表示)的初速度v0与所受合外力F的方向如图6-1-13所示.

物体(用字母O表示)的初速度v0与所受合外力F的方向如图6-1-13所示.物体的运动轨迹用虚线表示,则所画物体的运动轨迹中可能正确的是(    )

6-1-13

答案

解析:当物体所受合外力的方向与速度的方向不在同一条直线上时,物体做曲线运动,运动的轨迹应该在v0与F所夹的范围内(曲线在v0与F所夹的较小角度内),且运动轨迹的初始点的切线方向为初速度v0的方向.

答案:A

相关题目

据报道,N5是破坏力极强的炸药之一,18O2是比黄金还贵的物
据报道,N5是破坏力极强的炸药之一,18O2是比黄金还贵的物质。下列说法正确的是(     ) A.N5和N2互为同位素                         
抛物线的顶点坐标是(  ) (A);  (B);  (C) ; (
抛物线的顶点坐标是(  ) (A);  (B);  (C) ; (D) .
下列各对数中,数值相等的是    A、23和32   B、和-22  
下列各对数中,数值相等的是    A、23和32   B、和-22   C、和   D、-(-2)和
Gratitude makes your life better 36.________ And thankfulness and appreciation
Gratitude makes your life better 36.________ And thankfulness and appreciation are the pathway to happiness and well-being. Gratitude keeps us focused on what is already good in your lives, and open
People _________ running everywhere. Do you know what _________? A. see; has hap
People _________ running everywhere. Do you know what _________? A. see; has happened      B. see; happens C. are seen; is happening D. are seen; is happened
Night after night, my mother came to my bed, even long after my childhood years
Night after night, my mother came to my bed, even long after my childhood years.She would   1   down and push my long hair out of the way, and then kiss my forehead. I don't remember when it fi
某同学学习了“电路”知识后,自行设计安装了如图所示的
某同学学习了“电路”知识后,自行设计安装了如图所示的门铃,请在方框中画出这个门铃电路的电路图.
当黑龙江“飞雪漫天舞,极目寒冰戏”之时,海南岛却是春
当黑龙江“飞雪漫天舞,极目寒冰戏”之时,海南岛却是春耕农忙、热火朝天之际,造成这种差异的原因是        A.南北跨纬度广            

最新题目