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change in velocity divided by the time for the change to occur.

speed; direction of motion

A change in velocity occus when an object changes _______ or _____________ __ _________.

increases; direction

The speed of an object ______ if the acceleration is in the same _________ as the velocity.

decreases; opposite directions

The speed of an object _______ if the acceleration and the velocity of the object are in _______ ________.

final velocity minus initial velocity divided by final time minus initial time .

calculating acceleration

speeds up; positive

When an object moving in a straight line _____ __ its acceleration is _______.

slows down; negative

When an object moving in a straight line ____ __ its accelerationis ______.

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