A particle is moving eastwards with a velocity of 5m/s.In 10 seconds,the velocity changes to 5m/s northwards. Find the average acceleration of the particle in this time interval and also sketch the vector diagram..

Intial velocity=v1= 5m/seast wards                                   ^||^
then after time t=10sec                                                     || towards north 5m/s
v2 =5m/s north wards                                     .⇒⇒⇒⇒⇒⇒|
                                                                towards east 5m/s
Vresultant = √v1²+v2²
                =√25+25
                 =5 √2

acceleration a=velocity/time
                     = 5√2/10 
                     =√2/2 × √2/√2
                     =1/√2 towards n-w