向量 1.(12 points) (a) Draw the following two vectors on the paper,and add them graphically.vector a:5.0 cm in the +y directionvector b:3.0 cm in the -x direction(b) Using a ruler,measure the magnitude of the resultant vector c (=a+b)\x05\x05\x05\x

向量 1.(12 points) (a) Draw the following two vectors on the paper,and add them graphically.vector a:5.0 cm in the +y directionvector b:3.0 cm in the -x direction(b) Using a ruler,measure the magnitude of the resultant vector c (=a+b)\x05\x05\x05\x
向量
1.(12 points) (a) Draw the following two vectors on the paper,and add them graphically.
vector a:5.0 cm in the +y direction
vector b:3.0 cm in the -x direction
(b) Using a ruler,measure the magnitude of the resultant vector c (=a+b)
\x05\x05\x05\x05\x05\x05\x05
(c) Using the Phythagorian theorem,calculate the magnitude of c and compare it with the
measurement
(d) What is the angle between the vector c and vector
\x05\x05\x05\x05\x05\x05
\x05\x05\x05\x05\x05\x05
\x05\x05\x05\x05\x05\x05\x05
2.(8 points) (a) Draw the following two vectors on the paper,and add them graphically.
vector a:4.0 cm from the origin towards -y direction at an angle of 45 degrees from the +x
axis
vector b:6.0 cm in the +x direction
(b) Draw a vector d (=a-b)
\x05\x05\x05\x05\x05\x05
\x05\x05\x05\x05\x05\x05
\x05\x05\x05\x05\x05\x05\x05
3.(6 points) Draw the following three vectors on the paper,and add them graphically.
vector a:3.0 cm from the origin towards +y direction at an angle of 30 degrees from the +x
axis
vector b:4.0 cm from the origin towards +y direction
vector c:5.0 cm from the origin towards -x direction
\x05\x05\x05\x05\x05\x05
\x05\x05\x05\x05\x05\x05
\x05\x05\x05\x05\x05\x05\x05
4.(12 points) Add the following two vectors using their components and find the magnitude
and the direction (angle with respect to the +x axis) of the resultant vector.
vector a:9.0 cm from the origin towards +y direction at an angle of 22 degrees from the -x
axis
\x05\x05\x05\x05\x05\x05\x05
vector b:4.0 cm in the -y direction
我不是要翻译，我是完全没学过这个.

向量 1.(12 points) (a) Draw the following two vectors on the paper,and add them graphically.vector a:5.0 cm in the +y directionvector b:3.0 cm in the -x direction(b) Using a ruler,measure the magnitude of the resultant vector c (=a+b)\x05\x05\x05\x
这题白给啊.就是让你在纸上画向量啊.你就画呗.
第一题
向量a：随便找个起点,向正Y方向画一个5cm的箭头,
向量b：以同一个起点,再向负X方向画一个3cm的箭头.
用平行四边形法则,把向量c画出来,然后用尺量它的长度.
用勾股定理计算c的长度应该是根号34,差不多快6cm.和你刚才量的结果比较一下.
向量c和b的角度是arctan0.6.


后面的题目都类似啊.全是画向量的题.有啥不明白的啊.


起码你得说明白你的基础啊.你不明白的点在哪.你只把题目放上来,我不知道你到底哪不明白啊.只要学了一点点向量的内容,估计就应该会这个啊.这已经基础的不能再基础了.


你可以认为向量就是一个有方向有长度的射线.所以画向量就是画射线.方向用箭头方向表示,长度用尺子量.至于向量的加减法用三角形法则或者说平行四边形法则.你随便百度一下向量的加减法,平行四边形法则,半分钟就能学会.要学会自己去搞明白问题,搞不明白的在有的放矢的问,不要直接把题目扔上来就坐着等,谁也不明白你想问啥.

是要翻译么，就是在x轴和y轴上画线阿，然后向量求和。这个。。。不会画？