4. If a jet engine is moving 182 lbs. of air per second and the air enters the engine at 149 ft. per sec. and leaves at 2370 ft. per sec., how many pounds of thrust (force) is it producing?

5. Calculate the centripetal force of an object weighing 19 pounds traveling in a circular path with a radius of 21 feet while moving at a velocity of 874 ft. per sec.