A Certain Aircraft Has a Mass of 300,000 Kg

question 139

Multiple Choice

A certain aircraft has a mass of 300,000 kg. At a certain instant during its landing, its speed is 27.0 m/s. If the braking force is a constant 445,000 N, what is the speed of the airplane 10.0 s later?

• A) 10.0 m/s
• B) 14.0 m/s
• C) 18.0 m/s
• D) 12.2 m/s
• E) 20.0 m/s

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