If the acceleration of an object is constant, which of the following must be true?

• A) The velocity-time graph is a horizontal line.
• B) The position-time graph is a horizontal line.
• C) The velocity-time graph is a straight line.
• D) The position-time graph is a straight line.

• 1) C
• 2) D
• 3) A,C
• 4) A,C,D
• 5) B,C,D