Final answer:
The average velocity for the entire motion is 5 km/hr east.
Step-by-step explanation:
To find the average velocity for the entire motion, we need to calculate the total displacement and the total time taken.
For the eastward motion, the body moves 60 km in 2 hours. So the velocity is 60 km / 2 hr = 30 km/hr east.
For the southward motion, the body moves 75 km in 3 hours. So the velocity is 75 km / 3 hr = 25 km/hr south.
To calculate the average velocity, we need to combine these velocities. We can use vector addition to find the resultant velocity:
30 km/hr east - 25 km/hr south = 30 km/hr east - 25 km/hr * sin(90°) = 30 km/hr east - 25 km/hr = 5 km/hr east.
Therefore, the average velocity for the entire motion is 5 km/hr east.