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此套題僅?Section II含有簡答題,
共計(jì)時(shí)1小時(shí)30分鐘,共5題
占總分50%
每道大題可能含有不同數(shù)量的小題
可以使用計(jì)算器
考試時(shí)會提供常用的公示表
完整版下載鏈接見文末

1)The figure above represents two carts, with magnets attached, that make up a system. The mass of one cart and magnet is 1 kg and the mass of the other is 5 kg. The carts are initially at rest on a frictionless track. They are released from rest and exert a repulsive force on each other. The track is not quite horizontal, with the right side slightly lower than the left side.
The speeds of the carts are measured over a 10 s interval. The graph below shows the momentum of the two carts as a function of time for this interval as they move along the x-axis.


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