Question

Four particles are in a 2-D plane with masses, x- and y- positions, and x- and...

Four particles are in a 2-D plane with masses, x- and y- positions, and x- and y- velocities as given in the table below:

m

x

y

vx

vy

  1  

9.4 kg

-2.5 m

-4.6 m

3 m/s

-4.1 m/s

  2  

8.6 kg

-3.7 m

3.4 m

-5.2 m/s

5 m/s

  3  

7.8 kg

4.5 m

-5.7 m

-6.1 m/s

2.2 m/s

  4  

9 kg

5.4 m

2.5 m

3.9 m/s

-3 m/s

1)

What is the x position of the center of mass?

2)

What is the y position of the center of mass?

3)

What is the speed of the center of mass?

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