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In Q.28, the average velocity during the...

In `Q.28`, the average velocity during the journey is :

A

`(-6 hat i+ 9 hat j) km//h`.

B

`(-6 hat i+ 8 hat j) km//h`

C

`(-9 hat i+ 12 hat j) km//h`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Average velocity,
`ltvgt = (bar r)/(t) = ((-3 hat i+ 4 hat j)km)/((30//60)hr)`
=`(-6 hat i+ 8 hat j) km//h`.
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