[填空题]
Two vectors have lengf5s-38w feqb+c*n b i9oda-gf ,wg ;9doeld/p9a(or r(3q viv .pp(htth $ V_{1}=3.5 \mathrm{~km} $ and $ V_{2}=4.0 \mathrm{~km}$ . What are the maximum and minimum magnitudes of their vector sum?max = min =
参考答案: 空格1: 7.5±2%
空格2: 0.5±2%
本题详细解析: If the two vectors are in the same direction, the magnitude of thebt mwy.z9p-fh:ryt8a3 m s6k 9ir sum will be a maximum, an.mb3s -99kf: w8zyrptam6ty hd will be 7.5 km. If the two vectors are in the opposite direction, the magnitude of their sum will be a minimum, and will be 0.5 km. If the two vectors are oriented in any other configuration, the magnitude of their sum will be between 0.5 km and 7.5 km.
