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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  

8.9 kg

-2.4 m

-4.7 m

3.1 m/s

-4 m/s

  2  

7.8 kg

-3.6 m

3.5 m

-5.2 m/s

5.1 m/s

  3  

8.7 kg

4.4 m

-5.7 m

-6 m/s

1.9 m/s

  4  

7.6 kg

5.6 m

2.5 m

4.2 m/s

-3.1 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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