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2.Motion in Straight Line
medium
Which one of the following represents displacement time graph of two objects $A$ and $B$ moving with zero relative velocity ?
A

B

C

D

Solution
When velocity of $A =$ velocity of $B$ , then, relative velocity is zero.
$\therefore $ Displacement time graphs of $A$ and $B$ must have same slope (other than zero).
Standard 11
Physics