Question

The figure shows position-time graph of two riders C and
D. Based on the information represented by the graph,
answer the following questions.

20. Att = 0 s
(1) Rider C is ahead of rider D
(2) Rider D is ahead of rider C
(3) Rider C and D are at the same position
(4) Not enough information is given

21. At t = 0 s
(1) C is moving, and D is at rest
(2) Dis moving, and C is at rest
(3) C and D are both moving
(4) C and D are both at rest

22. At t = 0 s
(1) C has a greater velocity than D
(2) D has a greater velocity than C
(3) C and D have the same velocity
(4) C is accelerating

23. At t = 10 s
(1) C and D are at the same position
(2) Cand D have the same velocity
(3) The velocity of D is greater than the velocity
of C
(4) C is in front of D

*WITH PROPER SOLUTION*
GUYS PLEASE ANSWER THE QUESTIONS IF YOU KNOW IT! I'M POSTING IT AGAIN BECAUSE OF TWO KNUCKLE HEADS!
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Answer 1

Answer:

20-at t=0 ycoordinate of d>c so 2 option

21- both are at rest as in 2 quadrant no graph

22-1 as tantheta = v and clearly c has greatr tan

23-1 as at t=10 y coordinate is same