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A point moves in xy-plane according to e...

A point moves in xy-plane according to equation `x=a t, y = a t` (1-bt) where a and b are positive constants and t is time.The instant at which veolcity vector is at `pi//4` with acceleration vector is given by:

A

`1//a`

B

`1//b`

C

`1//b+1//b`

D

`(a+b)(a^(2)+b^(2))`

Text Solution

Verified by Experts

The correct Answer is:
B
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