[填空题]
A delivery truck tra3 g m5zfhat/p*p4, w ;+fhgkb1uzfhy/t +ykl+69xrx9r zvw2xvels 18 blocks north, 10 blocks east, and 16 blocks south. What is its final displacement from ry rx x6zwt2+x+vl99kthe origin? Assume the blocks are equal length. blocks
参考答案: 10±2%
本题详细解析: The truck has a displacemenh ulja (rrv3(5dy9 jv6t of 18+(-16)=2 blocks north and 10 blocks eay rjv9(a5ju 3vr d(l6hst. The resultant has a magnitude of $ \sqrt{2^{2}+10^{2}}=10 $ blocks and a direction of $\tan ^{-1} 2 / 10=11^{\circ}$ north of east.
