2) How large a constant force is required to accelerate a 1600 kg car from 6 m/s to a speed of 20 m/s in a distance of 500 m? Use work-energy concepts, not Newton's Laws.
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5 * m * v^2 Initial kinetic energy, KE_initial = 0.5 * 1600 * 6^2 = 28800 J Final kinetic energy, KE_final = 0.5 * 1600 * 20^2 = 320000 J Change in kinetic energy, ΔKE = KE_final - KE_initial ΔKE = 320000 - 28800 = 291200 J Show more…
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