What is the average speed of the boat
between 4 and 6 minutes?

the results is a decrease in air temperature with an increase of altitude.

explanation:

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;