Acar traveling west in a straight line on a highway decreases its speed from 30 meters per second to 23 meters per second in 2 seconds. the car's average acceleration during this time interval is

Aball is thrown upward in the air, and its height above the ground after t seconds is h ( t ) = 57 t − 16 t 2 feet. find the time t when the ball will be traveling upward at 14.25 feet per second.

Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.

In a good thermo flask the main cause of heat loss is