Question

Two buses 'A' and 'B' are moving in the same direction with the velocities 30m/s and 40m/s respectively. Find the relative velocity of the bus 'A' with respect to the bus 'B'. Calculate the relative displacement between them after 4 minutes.:)

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Answer 1

Relative Velocity, aVb:

`{ \bf{ _(A) V_(B) =V_(A) - V_(B) }} \\ _(A) V_(B) = 30 - 40 \\ _(A) V_(B) = - 10 \: {ms}^( - 1) \\ |_(A) V_(B)| = 10 \: {ms}^( - 1)`

Relative displacement:

`= ( |_(A) V_(B)| )/(time) \\ \\ = (10)/(4) \\ = 2.5 \: metres`