Car goin 50km/h N turns a corner n continues W at 50km/h. If turning takes 5 s, what is cars change in Velocit

Question

and accelleration during the turn

Correct Answer = 71 and 3.9
need to know how you get it tho

Answer 1

The delta in velocity is a vector calculation and is 50*sqrt(2) km/hr = 71 km/hr
convert 50*sqrt(2) km/hr to m/s = 19.6 m/s
acceleration = 19.6 m/s / 5s = 3.9 m/s/s

Answer 2

Velocity is a vector quantity. The numerical aspect of your velocity change remains constant in this example. The acceeleration is in the change of direction, not in a change of speed. The change is 90deg/5s or 18deg/s.