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One day in still air, a motor-cyclist ri...

One day in still air, a motor-cyclist riding norht at `30m//s`, suddenly the wind starts blowing Westward with a velocity `50m//s`, then calculate the apparent velocity with which the motor-cylist will move

A

`58.3m//s`

B

`65.4m//s`

C

`73.2m//s`

D

`53.8m//s`

Text Solution

Verified by Experts

(a) Here `theta=90^(@)`

Let `v'=` apparent velocity
`v'=sqrt(30^(@)+50^(2)+2(50)(30)cos 90^(@))`
`=sqrt(900+2500)`
`v'=58.3m//s`
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