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//4with acceleration vector is given by:

A point moves in xy-plane according to equation x=a t, y = a t (1-bt)w

1.	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//4with acceleration vector is given by:
Answer» `1//a` `1//B` `1//b+1//b` `(a+b)(a^(2)+b^(2))` ANSWER :B