Linear Momentum and Its Conservation

[Joyci116]

Homework Statement

A 3.00-kg particle has a velocity of (3.00i-4.00j)m/s. (a)Find its x and y components of momentum. (b) Find the magnitude and direction of its momentum.

Homework Equations

p=mv

The Attempt at a Solution

For part a, I found that the x and y components of momentum is (9.00i-12.00j)kg*m/s. But I am having trouble with the magnitude and direction. I was told to pythag it, but I am still not clear on what to do.

Thank you.

 

[PeterO]

Homework Statement

A 3.00-kg particle has a velocity of (3.00i-4.00j)m/s. (a)Find its x and y components of momentum. (b) Find the magnitude and direction of its momentum.

Homework Equations

p=mv

The Attempt at a Solution

For part a, I found that the x and y components of momentum is (9.00i-12.00j)kg*m/s. But I am having trouble with the magnitude and direction. I was told to pythag it, but I am still not clear on what to do.

Thank you.

Rather than say :"the x and y components of momentum is (9.00i-12.00j)kg*m/s."

Can you separately say

The x component is : ...
The Y component is : ...

 

[Joyci116]

Okay.