Arunner in a relay race runs 20 m north, turns around and runs south for 30 m, then turns north again and runs 40 m. the entire run took 30 seconds. what was the average speed of the runner? what was the average velocity of the runner?

(science)study the following ocean currents map. an ocean currents map is shown. on the map the locations for san diego, california and savannah, georgia are marked. there is a looping current from the north past san diego and a looping current from the south near savannah which statement is most likely correct about the average temperatures in san diego, california as compared to savannah, georgia? it is higher in savannah because of the cool ocean currents from the south. it is higher in savannah because of the warm ocean currents from the north. it is lower in san diego because of the warm ocean currents from the south. it is lower in san diego because of the cool ocean currents from the north.

The plum pudding model of the atom state that ?

Amaterial that provides resistance to the flow of electric current is called a(an) (1 points)