A 10,000 kg railroad car, A, traveling at a speed of 24.0 ms⁻¹ strikes an identical car, B, at rest. If the cars lock together as a result of the…

JAMB Physics 2024 91 views

A 10,000 kg railroad car, A, traveling at a speed of 24.0 ms⁻¹ strikes an identical car, B, at rest. If the cars lock together as a result of the collision, what is their common speed just afterward?

  1. 24.0 ms⁻¹
  2. 72.0 ms⁻¹
  3. 12.0 ms⁻¹ ✓
  4. 48.0 ms⁻¹

Explanation

Public finance concerns government revenue and expenditure. Revenue sources: taxes (income, company, VAT, customs), fees and fines, public enterprises profits, borrowing (domestic and foreign), and oil revenue for Nigeria.

Expenditure categories: recurrent (salaries, operations) vs capital (infrastructure, equipment). Federal, state, and local governments each have budgets. Revenue allocation between tiers is contentious.

Budget process: executive prepares, legislature approves, executive implements, auditor-general verifies. Nigeria often runs deficits (spending exceeds revenue), funded by borrowing. Debt sustainability is ongoing concern.

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