5. Decreasing speed Just an object can speed up , they can also slow down . This change in speed is sometimes called ((DECELERATES )) , or (( NEGATIVE ACCELERATION)) .
6. CHANGE DIRECTION Even that object that is traveling at a constant speed can be acceleration . Re call that acceleration can be change in direction as well as a change in speed . Many objects continuously change direction without change speed . For example : the seats on a Ferris wheel acceleration because they move in a circle .
7. Calculating acceleration To determine the acceleration of an object moving in a straight line , you must calculate the change in speed per unit of time . Acceleration = final speed – initial speed ----------------------------------- Time Acceleration is meters per second per second , or m . 2
