Physics, 13.03.2020 21:49 tmantooth7018
A 57.0-kg boy and his 43.0-kg sister, both wearing roller blades, face each other at rest. The girl pushes the boy hard, sending him backward with a velocity 3.00 m/s toward the west. Ignore friction.
(a) Describe the subsequent motion of the girl.
(b) How much potential energy in the girls body is converted into mechanical energy of the boy-girl system?
(c) Is the momentum of the boy-girl system conserved in the pushing-apart process? If so, explain how that is possible considering (d) there are large forces acting and
(e) there is no motion beforehand and plenty of motion afterward.
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A 57.0-kg boy and his 43.0-kg sister, both wearing roller blades, face each other at rest. The girl...
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