Question

A sailboat is traveling north at 10km/h, relative to the water. The water is flowing north at 5km/h. What is the velocity of the boat relative to ground?​

Answer 1

Given :

• A sailboat is travelling 10km per hour towards North.
• The water flowing towards North is at 5km per hour.

To Find :

• The velocity of the boat relative to the ground.

Trust me, this question is really simple. So let's go solve it!

Let v be the velocity of the boat relative to ground.

Let the velocity of the boat relative to water be $\sf{v_{b}}$ and let the velocity of the water be $\sf{v_{w}}$

$\longrightarrow{\boxed{\huge{\sf{v = v_{b} + v_{w}}}}}$

$\longrightarrow{ \sf{v = 10 + 5}}$

$\longrightarrow{\boxed{ \sf{v = 15kmph}}}$

______________________

Pretty easy, wasn't it? xD

Have a nice day ;)