Get comprehensive solutions to your problems with IDNLearn.com. Get accurate and comprehensive answers to your questions from our community of knowledgeable professionals.
Both are moving opposite
[tex]\\ \sf\ast\Rrightarrow R_{AB}=V_A-V_B[/tex]
[tex]\\ \sf\ast\Rrightarrow R_{AB}=20-20[/tex]
[tex]\\ \sf\ast\Rrightarrow R_{AB}=0m/s[/tex]