Troy went on a two-hour bike ride, completing a round trip of 13 kilometers. When he returned, he claimed his average speed for the 1 km trip was 13 km 2 hr 3600 sec 1 hr - 23.4 meters per second. Use the units in Troy's expression to explain why his calculation is 1000 m incorrect. Then rewrite the expression and find the correct average speed to the nearest tenth of a meter per second.​