When a car is weighed,it is driven slowly on a horizontal floor over a scale that records a reading as the front wheels go over the scale,and then records a second reading as 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 average of the two weights.
D)the sum of the two weights.
E)the difference of the two weights.

Question

Quizplus · Accepted Answer

The weight of the car is distributed over all four wheels of the car, so the weight recorded by the front wheels and the weight recorded by the rear wheels will not be the same. Therefore, the weight of the car is the sum of the two readings recorded by the scale, which is choice D, the sum of the two weights.

When a Car Is Weighed,it Is Driven Slowly on a Horizontal