An engineering intern claims that using mass in kilograms and acceleration in centimeters per second squared still gives force directly in newtons. Which judgment is correct?

• A. The claim is correct only when the velocity function is linear in time
• B. The claim is incorrect because force should be reported in kilograms per meter
• C. The claim is incorrect because acceleration must be expressed in meters per second squared to obtain force in newtons
• D. The claim is correct because any length unit combined with kilograms defines a newton

Answer: (C)