Choice $1$

Choice $1$

correct

At least one of the answers above is NOT correct.

At $t=0$ two moving objects A and $B$ pass each other at the origin. The velocity of object A changes with time as vec$(v{)}_A=(1+4kt)v_o$hat$(i)+(1+k^2{t}^2)v_o$hat$(j)$ during a time from $t=0$ to $t=\frac{1}{k},$ where $v_0$ and $k$ are positive constants. After this time object A then moves with a constant velocity. On the other hand object $B$ moves with a constant velocity the entire time. If the two objects are to meet again after $t=\frac{2}{k},$ determine the angle that the velocity of object $B$ must make with respect to the $x-$axis.

Average From Change in Velocity

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