an object is traveling 12 m/sec headed for 315T. it is deflected , and after 1.8 seconds , it is traveling 16 m/sec towards 240T . Find the average acceleration vector of the object

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

a is the best answer your welcome