23. A caravan of camels 500 m long moves in a single file along a straight...
23. A caravan of camels 500 m long moves in a single file along a straight line at 5.0 km/hr somewhere in the Arabian desert. Osman the Horseman, initially at the rear of the caravan, rides to the front at 25 km/hr and turns immediately around after reaching the first camel, riding back where he started from. Find the total time traveled by the horseman during his maneuver.