Question

A body is moving with velocity 30m/s towards east. After 10 seconds its velocity becomes 40m/s towards north. The average acceleration of the body is



(Answer coming is 5m/S2)

Answer 1

Initial velocity = The velocity in east direction = 30i ,
where i is unit vector along x axis.

Final velocity = The velocity in north direction = 40j ,
where j is unit vector along y axis.

Average acceleration
=Resultant velocity/time
={ (✓(30²+40²))/10} m/s² = 5m/s²
in north east direction!