Question Number 114158 by aurpeyz last updated on 17/Sep/20 | ||
Answered by aurpeyz last updated on 17/Sep/20 | ||
$${i}\:{am}\:{confused}\:{about}\:{the}\:{direction}\:{of}\:{the}\: \\ $$$${momentum}.\:{pls}\:{help} \\ $$ | ||
Answered by physicstutes last updated on 17/Sep/20 | ||
$$\mathrm{Since}\:\boldsymbol{\mathrm{p}}\:=\:{m}\boldsymbol{\mathrm{v}}\:,\:\mathrm{the}\:\mathrm{direction}\:\mathrm{of}\:\mathrm{the}\:\mathrm{velocity}\:\mathrm{will}\:\mathrm{be}\:\mathrm{the}\:\mathrm{same} \\ $$$$\mathrm{as}\:\mathrm{the}\:\mathrm{direction}\:\mathrm{of}\:\mathrm{the}\:\mathrm{momentum}.\: \\ $$$$\mathrm{If}\:\mathrm{we}\:\mathrm{choose}\:\mathrm{the}\:\mathrm{right}\:\mathrm{direction}\:\mathrm{as}\:\mathrm{positive}\:\mathrm{then}\:\mathrm{clearly}\:\mathrm{after}\:\mathrm{collision}\: \\ $$$$\mathrm{with}\:\mathrm{the}\:\mathrm{wall},\:\mathrm{the}\:\mathrm{momentum}\:\mathrm{will}\:\mathrm{be}\:\mathrm{negative}.\:\left[\mathrm{if}\:\mathrm{your}\:\mathrm{figures}\right. \\ $$$$\left.\mathrm{are}\:\mathrm{correct}\:\mathrm{i}.\mathrm{e}\:\mathrm{the}\:\mathrm{law}\:\mathrm{of}\:\mathrm{conservation}\:\mathrm{of}\:\mathrm{linear}\:\mathrm{momentum}\:\mathrm{hold}\right]. \\ $$ | ||