textbk+chapter3

=__Thoughts about how the concepts in chapter 3 relate to the motion of a car__= =After reading chapter 3, I learn that a car will slow down since there is friction, friction always oppose motion. When a car makes a turn, it is accelerating even if the speed doesn't change, this is because the direction of the car changes. Acceleration happens during a change in speed and/or direction. Also, when the brakes are applied to the car, the speed slows down, this is also acceleration because the velocity of the car changes.=