A body is moving with velocity 30 m/s towards east. After 10 seconds its velocity becomes 40 m/s towards north. The average acceleration of the body is
1
5 m/s2
2
1 m/s2
3
7 m/s2
4
\(\sqrt{7} \ m/s^2\)
A body is moving with velocity 30 m/s towards east. After 10 seconds its velocity becomes 40 m/s towards north. The average acceleration of the body is