A 777 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 445,000 N, what is the speed of the airplane 10.0 s later?

Question

Quizplus · Accepted Answer

The correct answer is B because the acceleration of the airplane is a = F/m = 445,000 N / 300,000 kg = 1.48 m/s^2. The speed of the airplane 10.0 s later is v = u + at = 27.0 m/s + 1.48 m/s^2 * 10.0 s = 41.8 m/s.

A 777 Aircraft Has a Mass of 300,000 Kg