A firecracker is at rest on a frictionless horizontal table. The firecracker explodes into two pieces of unequal mass that move in opposite directions on the table.
i. Is the net force on the left piece always zero? Explain.
ii. Is the net force on the system consisting of both pieces always zero? Explain.
iii. Is the momentum of the left piece conserved? Explain.
iv. Is the momentum of the system consisting of both pieces conserved? Explain.
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