Change in Velocity Homework Solution

[lil08]

Homework Statement

Water enters and leaves a pipe as shown at a steady speed of 1.5. Find the change in velocity.

http://kv8v6q.blu.livefilestore.com/y1pjsZ-s4z6_sTZEgW2-nsZ8pf1YrZml2cqcsXxgwnDNbUzFlaPXJcSe_nX93qAi6xd_Z7BATO9oBNXPDbxrGoJHEkk6WbzV3wR/0.bmp

Homework Equations

V₁-V₂=Change in Velocity

The Attempt at a Solution

I need to draw the resultant. What next?

 

[berkeman]

Homework Statement

Water enters and leaves a pipe as shown at a steady speed of 1.5. Find the change in velocity.

http://kv8v6q.blu.livefilestore.com/y1pjsZ-s4z6_sTZEgW2-nsZ8pf1YrZml2cqcsXxgwnDNbUzFlaPXJcSe_nX93qAi6xd_Z7BATO9oBNXPDbxrGoJHEkk6WbzV3wR/0.bmp

Homework Equations

V₁-V₂=Change in Velocity

The Attempt at a Solution

I need to draw the resultant. What next?

Welcome to the PF. I believe that they want you to calculate the change in vector velocity. So express the entry velocity as a vector in xy coordinates, and the exit velocity in xy coordinates. The difference is just the subtraction of the two vectors, carried out with components.

 

[kerimek]

I would approach this problem by first identifying the relevant equations and variables. The relevant equation in this case would be the equation for change in velocity, which is V1-V2=Change in Velocity. The variables would be V1 and V2, which represent the initial and final velocities of the water, respectively.

Next, I would use the given information of the water entering and leaving the pipe at a steady speed of 1.5 to substitute into the equation. Since the water is entering and leaving at the same speed, V1=V2=1.5. Substituting these values into the equation, we get 1.5-1.5=Change in Velocity. Therefore, the change in velocity is 0.

This means that there is no change in velocity for the water entering and leaving the pipe at a steady speed of 1.5. This is because the water is entering and leaving at the same speed, so there is no acceleration or deceleration, and therefore no change in velocity.

In conclusion, the change in velocity for the water entering and leaving the pipe at a steady speed of 1.5 is 0. This solution can also be verified by drawing the resultant vector, which would show that the magnitude and direction of the velocity remains constant.