A car traveling south is 200 kilometers from its starting point after 2 hours. What is the average velocity of the car?

A.100 kilometers/hour south
B.200 kilometers/hour
C.200 kilometers/hour north
D. 100 kilometers/hour

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

What is a carrier wave and how does it affect what you hear on the radio

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.