Q. Which of the following speed-time graphs exist in the nature?
A) [image:3_image62.emf]
B) [image:3_image63.emf]
C) [image:3_image64.emf]
D) All of the above
Explanation
(b) Speed can never be negative. Hence (b) is correct.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.