Markus walks 5 km due West. He then turns around immediately and walks 2 km due East. The entire journey takes 2 hours. Which row gives the correct values for his average speed and average velocity?

Markus walks 5 km due West. He then turns around immediately and walks 2 km due East. The entire journey takes 2 hours. Which row gives the correct values for his average speed and average velocity? Average speed Average velocity a. 3.5 km/h 1.5 km/h, W b. 1.5 km/h, W 3.5 km/h C. 3.5 km/h, W 1.5 km/h d. 3.5 km/h 1.5 km/h, E O a. Row A O b. Row B O c. Row C O d. Row D