Scientific Skills & Tools (id: c9666ca71)

本题目来源于试卷: Scientific Skills & Tools，类别为 IB物理学

[单选题]
Two trucks X and Y are pulling a car out of thick mud along a straight path. The only other horizontal force acting on the car is a drag force opposite to the direction of motion. The diagram shows the direction of the force applied by truck $X$ and the direction of motion of the car.



Which of the following vectors shows the direction of the force applied by truck $Y$?

A.
B.
C.
D.


参考答案:  C


本题详细解析:
The motion of the car here is in the direction of the sum of the two forces vectors from $�$ and $�$.
The only vector that will add to vector $�$ to produce a net force vector to the right is one in the direction of C.

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