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What are the phases shown in a and d called?

Acar travels along a highway with a velocity of 24 m/s, west. the car exits the highway; and 4.0 s later, its instantaneous velocity is 16 m/s, 45° north of west. what is the magnitude of the average acceleration of the car during the four-second interval?

Write a full page that sumerizes thermodynamics it’s from the website visionlearnig