Calculate the average speed of a complete round trip in which the outgoing 280 km is covered at 97 km/h , followed by a 1.0-h lunch break, and the return 280 km is covered at 51 km/h . express your answer to two significant figures and include the appropriate units. v¯ v ¯ = 60 km h previous answers correct part b calculate the average velocity of the trip.

Which statements describe the movement of ocean currents around the globe? check all that apply. strong winds force warm water to sink to the ocean floor. the coriolis effect causes warm and cold water to mix. cool dense water sinks to the ocean floor. warm water replaces cool surface water. wind blowing parallel to the shore causes upwelling of cool water.