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[الفيزولجي]

السلام عليكم ورحمة الله وبركاته. صباح الخيرات
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5kg ball of putty moving to the right has a head-on inelastic collision with a 1kg putty ball moving to the left both coming to a full stop after the collision . what were the relative speeds of the balls before they collided?
ووفقكم الله لما يحب ويرضى

[الفيزولجي]

Tow point charges are separated by 6cm and the attactive force between them is 20N find the force between themwhen they are separated by 12 cm ?

تكفوووووووووووووووووووووووووووووون الجواب اريده .