An Object Moving Along a Straight Line Is Decelerating

question 61

Multiple Choice

An object moving along a straight line is decelerating. Which one of the following statements concerning the object's acceleration is necessarily true?

• A)The value of the acceleration is positive.
• B)The direction of the acceleration is in the same direction as the displacement.
• C)An object that is decelerating has a negative acceleration.
• D)The direction of the acceleration is in the direction opposite to that of the velocity.
• E)The acceleration changes as the object moves along the line.

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