As an airplane lands, its engine is providing a forward force of 5.1 E 5 N. The pilot uses the flaps to create a backwards drag force of 1.9
E 6 N. The mass of the airplane is 3.0 E 5 kg.
Assuming that all forces are constant, determine the amount of time it will take the plane to come to a complete stop if it meets the landing strip with a forward velocity of 2.7 E 2 km/hr.