If a 1000-kg car was moving at 30 m/s,what would be its kinetic energy expressed in the unusual (for kinetic energy)units of calories? (1 cal = 4.186 J) A)3.0 x 10⁴ B)9.0 x 10⁵ C)3.8 x 10⁶ D)1.1 x 10⁵

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Quizplus · Accepted Answer

The kinetic energy (KE) is calculated using the formula KE = 0.5 * mass * velocity^2. For a 1000-kg car moving at 30 m/s, KE = 0.5 * 1000 * (30)^2 = 450,000 J. Converting joules to calories: 450,000 J / 4.186 J/cal = 107,529 cal, which is approximately 1.1 x 10^5 cal.

If a 1000-Kg Car Was Moving at 30 M/s,what Would