Comets travel around the sun in elliptical orbits with large eccentricities. If a comet has speed 2.4×104 m/s when at a distance of 2.2×1011 m from the center of the sun, what is its speed when at a distance of 5.0×1010 m . Express your answer using two significant figures.=m/s

whichever one it is, it's definitely not one that you included on the list you provided.

the moving of the box is a result of centripetal force. think of that  as a car or a truck in this case creates a turn, the force of friction performing upon the turned wheels of the car runs centripetal force obligatory for circular motion for the things inside it.