求翻译一道英文的物理题Find the sum of the following four vectors ((a) and (b) for x and y components respectively), and as (c) a magnitude and (d) an angle relative to +x (including sign plus or minus).P: 6.8 m, at 34o counterclockwise fro
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![求翻译一道英文的物理题Find the sum of the following four vectors ((a) and (b) for x and y components respectively), and as (c) a magnitude and (d) an angle relative to +x (including sign plus or minus).P: 6.8 m, at 34o counterclockwise fro](/uploads/image/z/1861710-6-0.jpg?t=%E6%B1%82%E7%BF%BB%E8%AF%91%E4%B8%80%E9%81%93%E8%8B%B1%E6%96%87%E7%9A%84%E7%89%A9%E7%90%86%E9%A2%98Find+the+sum+of+the+following+four+vectors+%28%28a%29+and+%28b%29+for+x+and+y+components+respectively%29%2C+and+as+%28c%29+a+magnitude+and+%28d%29+an+angle+relative+to+%2Bx+%28including+sign+plus+or+minus%29.P%3A+6.8+m%2C+at+34o+counterclockwise+fro)
求翻译一道英文的物理题Find the sum of the following four vectors ((a) and (b) for x and y components respectively), and as (c) a magnitude and (d) an angle relative to +x (including sign plus or minus).P: 6.8 m, at 34o counterclockwise fro
求翻译一道英文的物理题
Find the sum of the following four vectors ((a) and (b) for x and y components respectively), and as (c) a magnitude and (d) an angle relative to +x (including sign plus or minus).
P: 6.8 m, at 34o counterclockwise from +x
Q: 21 m, at 6.5o counterclockwise from +y
R: 8.9 m, at 31o clockwise from -y
S: 6.9 m, at 37o counterclockwise from -y
求翻译一道英文的物理题Find the sum of the following four vectors ((a) and (b) for x and y components respectively), and as (c) a magnitude and (d) an angle relative to +x (including sign plus or minus).P: 6.8 m, at 34o counterclockwise fro
已知下列四个向量
P:6.8米,方向为x轴正方向逆时针旋转34度
Q:21米,方向为y轴正方向逆时针旋转6.5度
R:8.9米,方向为y轴负方向顺时针旋转31度
S:6.9米,方向为y轴负方向逆时针旋转37度
求
1)向量之和的x轴分量
2)向量之和的y轴分量
3)向量之和在x轴正方向上的长度(要带正负符号)
及4)向量之和与x轴正方向的夹角(要带正负符号)
太难了。