Step-by-step explanation:
It is given that,
Momentum in y direction is
![2.4* 10^4\ kg-m/s](https://img.qammunity.org/2021/formulas/physics/college/iv93mf1ai92eh1uyll8dg2s1jxevmhb9cl.png)
Momentum in x direction is
![7* 10^4\ kg-m/s](https://img.qammunity.org/2021/formulas/physics/college/ip8fffes9oa5ltenmo0oqlo7whqs457x9f.png)
We need to find the angle of the motion of the two vehicles, with respect to the x-axis. The angle between two vectors is given by :
![\tan\theta=(p_y)/(p_x)\\\\\tan\theta=(2.4* 10^4)/(7* 10^(4))\\\\\theta=\tan^(-1)\left(0.342\right)\\\\\theta=18.88^(\circ)](https://img.qammunity.org/2021/formulas/physics/college/v1h31piuq674gwbek4brmlvz6t1rnr3xi2.png)
So, the angle of the motion of the two vehicles is 18.88 degrees.