Kinematics (id: d1710e41e)

本题目来源于试卷: Kinematics，类别为 IB数学

[问答题]
A particle P starts qvka1)d/j et.1y v w0wl1os;sfrom a point O and mz sy6th23om1noh 1z,soves along a horizontal straight line. Its z3,16ys 2tm hohnz1os velocity$ v \mathrm{~ms}^{-1}$ after t seconds is given by




The following diagram shows the graph of v .



1. Find the initial velocity of particle P .
2. Find the acceleration of the particle in the first second.
3. How many times does the particle change direction in the first 8 seconds. Explain your answer.
4. Find the total distance travelled by the particle in the first 8 seconds.

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