• 2022-06-19
     一质点运动学方程为[tex=7.786x1.5]o9TUhNYwlK7bBfV1FB8SW4my+QS17UAxiyc2nnQqgJqSbs/DH6l6qZeAm2WoWazVLGs6O88Vd9S97dmWjfgo0rnGAVUY/EoDtmzZbGjtCVM=[/tex] 和 [tex=0.571x1.0]xmABzkfH1dI7hTnxCUH55g==[/tex] 均以 [tex=0.857x0.786]qWVpqmaNKshsMKg63rQf8Q==[/tex]为单位, [tex=0.429x0.929]ZK7DUTylfXkE34MrqaBSqA==[/tex] 以 [tex=0.429x0.786]I7ukmfZ01z16gGlfdK6zHA==[/tex] 为单位, 试求:在[tex=2.071x1.0]oZNKq8joJiyf6K25XxeKSIPb6pHDixp+Uc/CHeN1vm0=[/tex] 时, 质点的速度[tex=0.571x0.786]kHFjZ6/er8xDqIhd9yfhlQ==[/tex] 和加速度[tex=0.786x0.786]6XSHmO199ratOm8Ay/L5yQ==[/tex] 
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