Physics · MOTION IN A STRAIGHT LINE

Consider the following characteristics of motion along a straight line: (A) Average velocity is the displacement divided by the total time interval. (B) Instantaneous velocity is the derivative of position with respect to time. (C) The area under the velocity-time graph represents acceleration. (D) In uniform motion, instantaneous speed equals average speed. Which of the above statements are correct?

1. A
   All four (A), (B), (C) and (D)
2. B
   (A) and (C) only
3. C
   (B), (C) and (D) only
4. D
   (A), (B) and (D) only