gc textbook chapter 2 Kinematics in One Dimension (id: dbe1c25c8)

本题目来源于试卷: gc textbook chapter 2 Kinematics in One Dimension，类别为 IB物理学

[填空题]
An airplane travels 3100 km at a speed of 790+4 f nfojq82 k-cpe0q)z2zhpy km/h , and then es-7dp s/jvg :1eolw-qncounters a tailwi 7los:jqpgse/v- d-1 wnd that boosts its speed to 990 km/h for the next 2800 km.
What was the total time for the trip?    h
What was the average speed of the plane for this trip? [Hint: Think carefully before using Eq. 2–11d.]    km/h

参考答案:
空格1: 6.752±2%  空格2: 873.8±2% 


本题详细解析:

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