When a car is weighed, it is allowed to move over a scale which records a reading as the front wheels go over the scale, and a second reading when the rear wheels go over the scale. The weight of the car is equal to
A) the weight under the front wheels.
B) the weight under the rear wheels.
C) the sum of the two weights.
D) the average of the two weights.
Think about it. The weight of the car is the sum of the forces applied to the front and rear wheels. When the wheels are on the scale, only the front or the back are being measured.
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