(a) You ride your bike along a straight road for a distance d at a constant speed of 15.0 mi/hr and then for another distance 2d along the same straight road at a different constant speed. The average speed for the total trip is 14.0 mi/hr. Determine your constant speed during the second part of the trip. (Enter your answer to at least two decimal places.)

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

Positrons are spontaneously emitted from the nuclei of

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.