Three people are at rest at the same spot on an icy surface...

Name: Three people are at rest at the same spot on an icy surface and push off of each other. Take this initial position to be the origin. At a certain time later, one person of mass 75 kg is at the point (4.2 m, -8.3 m), and another of mass 80 kg is at the point (5.5 m, 1.4 m). What are the coordinates of the third person with mass 70 kg? (Assume friction can be ignored.)
Uploaded: 2022-06-29T13:07:33-08:00
Duration: 5 min 20 s
Channel: Suman K
Description: Three people are at rest at the same spot on an icy surface and push off of each other. Take this initial position to be the origin. At a certain time later, one person of mass 75 kg is at the point (4.2 m, -8.3 m), and another of mass 80 kg is at the point (5.5 m, 1.4 m). What are the coordinates of the third person with mass 70 kg? (Assume friction can be ignored.)

Three people are at rest at the same spot on an icy surface and push off of each other. Take this initial position to be the origin. At a certain time later, one person of mass 75 kg is at the point (4.2 m, -8.3 m), and another of mass 80 kg is at the point (5.5 m, 1.4 m). What are the coordinates of the third person with mass 70 kg? (Assume friction can be ignored.)

Transcript

00:01 Hello guys i'm here to show this problem so three people are at rest at the same sport on an icy surface and push off by each other.

00:11 Take this initial position to be horizon.

00:15 At a certain time later one person of mass 75 kg is at point so the mass of the person is 75 kg and it is at the point 4 .2 meter and minus 8 .3 so these are the coordinates of the 75 kg person and the another person which weight is 80 kg and the position of this person is 5 .5 meter and 1 .4 meter.

00:48 So what are the coordinates of the third person with the mass 70 case? the third person which mass is 70k.

00:57 So it is the first person, second person and third person.

01:02 So we need to find the coordinates of this person.

01:05 So what are the coordinates of this person? so since there is no external force acting on the system.

01:12 So we can see that there is no external force is applied on the system.

01:18 So center of the mass of the system will remain the same.

01:22 So initial position of the center mass.

01:24 So what is the initial position? initial position of mass of system.

01:31 It's the initial position of center of mass at origin which is equal to 0 .0.

01:38 After pushing of each other, center of mass, suppose the center of mass is moved from x centimeter and y centimeter.

01:51 Now we can see that here x centimeter is equal to...

Question

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