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發(fā)布時間：2023-11-21 17:33:55 編輯：小楊來源：犀牛國際教育
1. A car of mass 1200kg tows a caravan of mass 600kg.
The resistive forces acting on the car and caravan are
proportional to their individual weights and their sum equals 900N.
The vehicle accelerates at 2.0ms²on a flat road
(i) What force is exerted by the engine?
(ii) What is the tension in the tow bar?
(iii) What is the power being converted by the engine after 5s?
2. An object of mass m slides down
the smooth sloping
surface of a wedge of mass mz as shown in Fig.
The angle of the slope in θ=30°to
the horizontal,the wedge
sits on a smooth horizontal surface.
掃碼回復【BPHO】在線領取
想要申請國際名校理工學科專業(yè)，尤其是進英國G5和美國藤校，數(shù)學和物理競賽一定是必備的學術能力證明，這里給大家盤點：往屆錄取牛劍G5的學員都參加了哪些物理競賽？
可以看到，數(shù)理化生基本上已經(jīng)成為背提標配，根據(jù)這張表，我們梳理出了含金量高的國際物理競賽：
