Question

A ship moves due east at 12 kmhr and then turns towatds south find average velocity

Answer 1

Distance travelled towards east = 12km/h * 1 hr = 12 km

Distance travelled towards south = 5km/h * 1 hr = 5 km

.

Displacement vector will be the hypotenuese if we draw the triangle.

Hence displacement = root of ( 12^2 + 5^2) = 13km

.Total time taken to reach the final point = 1hr east + 1hr south = 2 hrs

.

Average velocity = 13 km / 2 hrs = 6.5 km/hr