To Determine the Mass of a Car, a Student (With

question 9

Multiple Choice

To determine the mass of a car, a student (with a friend at the wheel) pushes the car holding a bathroom scale between himself and the car and carefully maintains a constant reading of 400 N on the scale while the car accelerates on level ground. At the conclusion of the experiment his friend reports that the car accelerated from rest to 14.0 km/hr in 12.0 s. What was the mass of the car?

• A) 343 kg
• B) 1230 kg
• C) 2460 kg
• D) 3360 kg
• E) 3430 kg

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