本题目来源于试卷: Physics Unit3: Kiematics Motion in Two Dimension & Vectors，类别为 通用国际物理
[问答题]
Vector A is 75.0 cm long ta,tn-2g:ujhn9qh) d and po jj 2dx39t+jrfints at $30^{\circ}$ above the positive x axis. Vector B is 25.0 cm long
and points along the negative x axis. Vector C is 40.0 cm long and points at $45^{\circ}$ below the negative x axis.
(a) Determine the x and y components of Vector A .
(b) Determine the x and y components of Vector B .
(c) Determine the x and y components of Vector C .
(d) Determine the sum of these three vectors in terms of components.
(e) Determine the sum of these three vectors in terms of magnitude and direction.
参考答案:
(a) $A_x = 65 \; cm, A_y = 38 \; cm$
(b) $B_x = -25 \; cm, B_y = 0$
(c) $C_x = 21 \; cm, C_y = -21 \; cm$
(d) $R_x = 61 \; cm, R_y = 17 \; cm$
(e) $63 \; cm$ at $20^{\circ}$ above x axis
本题详细解析:
暂无
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