Question

A ship moves at $40kmph$ due north and suddenly moves towards east through ${90}^0$ and continues to move with the same speed. Then the change in velocity is

• A. Zero
• B. 40 kmph North East
• C. 40 kmph South West
• D. $40\sqrt{2}$ kmph South East

Answer 1

The correct option is D $40\sqrt{2}$ kmph South East

Change in velocity along north-south direction = 40 kmph towards south
Change in velocity along east-west direction = 40 kmph towards east
Hence, net change in velocity = 40$\sqrt{2}$ in south - east direction