A 69.0-kg boy and his 37.0-kg sister, both wearing rollerblades, face each other at rest. The girl pushes the boyhard, sending him backward with a velocity 3.30 m/stoward the west. Ignore friction.(a) Describe the subsequent motion of the girl.She will move west, in the same direction as her brother,with a speed 3.30 m/s.She will move east, directly away from her brother with aspeed 7.8 m/s.She will move east, directly away from her brother with aspeed 6.15 m/s.She will move east, directly away from her brother with aspeed 1.65 m/s.(b) How much potential energy in the girl's body isconverted into mechanical energy of the boy-girlsystem?J(c) Is the momentum of the boy-girl system conserved inthe pushing-apart process?Yes or No

I have used the concept of conservation of momentum

Answered: A 69.0-kg boy and his 37.0-kg sister,…

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