You drive your car 2 km to the gas station, 4 km to the shopping mall to let your mother off, and 4.5 km back home. the trip takes 20 min. what is your velocity in m/s?

-9 m/s
+4 m/s
0 m/s
-3 m/s

How can one distinguish breccia from conglomerate? a. breccia contains angular clasts and conglomerate contains rounded clasts. b. breccia contains rounded clasts and conglomerate contains angular clasts. c. different minerals cement breccia than cement conglomerate. d. breccia contains sand and conglomerate contains silt.

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

Ateacher gives students four liquids commonly found in the kitchen - vinegar, apple juice, dish detergent, and milk - and ph indicator strips, which measure acidity. the teacher asks the students to put the liquids in order from most acidic to most basic. what type of investigation could the students conduct to determine the correct order for the liquids?