A particle travels in a circle of radius 20 cm at a speed that uniformly increases. If the speed changes from 5.0 ms⁻¹ to 6.0 ms⁻¹ in 2.0 s, find the…
A particle travels in a circle of radius 20 cm at a speed that uniformly increases. If the speed changes from 5.0 ms⁻¹ to 6.0 ms⁻¹ in 2.0 s, find the angular acceleration.
Transportation modes: road (most flexible, door-to-door), rail (efficient for bulk goods, fixed routes), water (cheapest per ton-mile, slow), air (fastest, most expensive, limited cargo). Each suits different needs.
Nigeria relies heavily on roads – rail network deteriorated after independence. Lagos and Port Harcourt have major seaports. International airports in Lagos, Abuja, Kano, Port Harcourt. Road conditions vary greatly.
Transportation infrastructure affects development: connects producers to markets, enables migration and urbanization, facilitates trade. Poor roads increase costs and limit economic opportunities in rural areas.
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