A car travelling at 36km/h-1 due North turns West in 5 seconds and maintains the same speed. What is the acceleration of the car?
4ms-2South West
2√2 ms-2South West
2ms-2South West
√2ms-2South West
A boy travels 5 km to the south and turns west to travel 13 km. Finally, he travels on the same path, 9 km due east and stops. What is his displacement from the initial point?