Question

A bus is moving on a straight road towards North with a uniform speed of $50$ km/h. If the speed remains unchanged after turning through ${90}^o$, the increase in the velocity of the bus in the turning process is?

Answer 1

Let the North be represented by Y-axis. The when the car turns left, it moves along the -ve x-axis, towards West.

Let

Change in velocity is =

Magnitude of change in velocity is $\sqrt{{50}^2+{50}^2}=50\sqrt{2}$

The direction of the change in velocity = Southwest, 45 deg. from South towards West.