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Question Number 114158 by aurpeyz last updated on 17/Sep/20

Answered by aurpeyz last updated on 17/Sep/20

$$iamconfusedaboutthedirectionofthe$$$$momentum.plshelp$$

Answered by physicstutes last updated on 17/Sep/20

$$\mathrm{Since}\mathbf{p}=m\mathbf{v},\mathrm{the}\mathrm{direction}\mathrm{of}\mathrm{the}\mathrm{velocity}\mathrm{will}\mathrm{be}\mathrm{the}\mathrm{same}$$$$\mathrm{as}\mathrm{the}\mathrm{direction}\mathrm{of}\mathrm{the}\mathrm{momentum}.$$$$\mathrm{If}\mathrm{we}\mathrm{choose}\mathrm{the}\mathrm{right}\mathrm{direction}\mathrm{as}\mathrm{positive}\mathrm{then}\mathrm{clearly}\mathrm{after}\mathrm{collision}$$$$\mathrm{with}\mathrm{the}\mathrm{wall},\mathrm{the}\mathrm{momentum}\mathrm{will}\mathrm{be}\mathrm{negative}.[\mathrm{if}\mathrm{your}\mathrm{figures}$$$$\mathrm{are}\mathrm{correct}\mathrm{i}.\mathrm{e}\mathrm{the}\mathrm{law}\mathrm{of}\mathrm{conservation}\mathrm{of}\mathrm{linear}\mathrm{momentum}\mathrm{hold}].$$

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