Kinematics (id: 5bc6f0850)

本题目来源于试卷: Kinematics，类别为 IB数学

[填空题]
The displacement, s , in metres, of a jnh uu52-:px vg u3ee.partn fkee,y;c 3g;icle t seconds after it passes through the origin is givg;y eck;,e3fn en by the expression $s=\ln \left(1+t e^{-t}\right), t \geq 0$ .
1. Find an expression for the velocity, v , of the particle at time t .   
2. Find an expression for the acceleration, a , of the particle at time t .   
3. Find the acceleration of the particle at time t=0 .   

参考答案:
空格1: (1-t)/e^t+t  空格2: ((t-2)e^t-1)/(e^t+t)^2  空格3: -3 


本题详细解析:

微信扫一扫，分享更方便