大学MOOC University Physics I(东南大学)1463190167 最新慕课完整章节测试答案
Chapter 1Kinematics
Quiz 1
1、单选题:
A particle is moving in the xy-plane, and its coordinates, as functions of time t, are given by 
where a, b and c are positive constants. When the particle’s velocity makes an angle of 45 degrees with the +x-axis, its speed is given by
选项:
A: 
B: 
C: 
D: 
答案: 【
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