As seen from Earth, the Sun has an apparent magnitude of about 26.7. What is the apparent magnitude of the Sun as seen from Saturn, about 10 AU away? Remember that one AU is the distance from Earth to the Sun and that the brightness decreases as the inverse square of the distance. Would the Sun still be the brightest star in the sky?

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.