13. The displacement time graph of a moving particle is shown below. The instantaneous velocity of the particle is negative at the point

 

13. The displacement time graph of a moving particle is shown below. The instantaneous velocity of the particle is negative at the point

(a) D 

(b) F 

(c) C 

(d) E

Answer :  (d) E

\( Instantaneous \; velocity= \) \(\frac{dx}{dt}\)\(= slope \)

The slope at point E is negative.

Therefore the instantaneous velocity of the particle is negative at that point.