Question

A boat is traveling with a velocity of 18 meters/second relative to water and the river is flowing at a velocity of 2.5 meters/second relative to the shore. What will be the velocity of the boat if the boat and the water are in opposite directions?

Answer 1

Vt = Vboat - Vriver
Vt = 18 - 2.5 = 15.5 m/s

If the boat's direction is the same as the water, you sum the velocities of the river and the boat .

Answer 2

Answer:Velocity of boat is 15.5
`(m)/(s)`

Step-by-step explanation:Using equation of relative motion

`V_(boat,water)=V_(boat)-V{water}`

=>
`V_(boat)=V_(boat,water)+V_(water)`

where velocity of boat relative to water ,
`V_(boat,water)`=18 m/s

velocity of water,
`V_(water)=-2.5(m)/(s)`

and velocity of boat ,
`V_(boat)=? (m)/(s)` to be calculated.

Putting the known values in the above equation , we get

`V_(boat)= (18-2.5)(m)/(s)=15.5(m)/(s)`