2 kids take part in a tug of war on an icy playground (don\'t try this at home).

Question

2 kids take part in a tug of war on an icy playground (don't try this at home). There is zero friction between their shoes and the ground. Child A has a mass of 31 - kg and child B has a mass of 50 - kg. They are initially standing 12 m apart.

Part A

How far from child A is their CM?

Express your answer using two significant figures.

SubmitRequest Answer

Part B

Each child holds the end of a rope and child B pulls on the rope so that he moves toward child A. How far will child B have moved when he collides with child A?

Express your answer using two significant figures.

Explanation / Answer

a)

XCM=mAXA+mBXB/(mA+mB) =31*0+50*12/(31+50)

XCm =7.407 m

b)

The Distance child B have moved when he collides with child A is

dXchild,B=12-7.407 =4.593 m

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.