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A turck is moving on the ground with a v...

A turck is moving on the ground with a velocity `v=12m//s` and a box is moving on the truck with respect to it with a velocity `u=5m//s` as shown in the figure. What is the velocity of the box with respect to the ground?

A

`5ms^(-1)` towards right

B

`7ms^(-1)` towards left

C

`7ms^(-1)` towards right

D

`5ms^(-1)` towards left

Text Solution

Verified by Experts

The correct Answer is:
C
`vecv_b=vecv_(b,t)+vecv_t=-4hati=(v-u)hati`
`=(12-5)hati+7hati=7m//s` towards right
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