[填空题]
A delivery truck travels 18 blon3k3y+.tu ,xftxs0 4eveb+pdcks w ;7gpok m-lkcv /d,piq((/bvnorth, 10 blocks east, and 16 blocks south. What is its final v;ib, owdkvcpgqpm(l ( -//7kdisplacement from the origin? Assume the blocks are equal length. blocks
参考答案: 10±2%
本题详细解析: The truck has a displacement of7 tdxk((9 cffe 18+(-16)=2 blocks north and 10 blocks east. The resultant has a magnitude(tcff9k(7d xe of $ \sqrt{2^{2}+10^{2}}=10 $ blocks and a direction of $\tan ^{-1} 2 / 10=11^{\circ}$ north of east.
