If a 2100-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 × 10⁴ B) 2.3 × 10⁵ C) 3.8 × 10⁶ D) 1.1 × 10⁵

Question

Quizplus · Accepted Answer

The kinetic energy (KE) is calculated using KE = 0.5 * mass * velocity^2. For the car, KE = 0.5 * 2100 kg * (30 m/s)^2 = 945,000 J. Converting joules to calories: 945,000 J / 4.186 J/cal = 225,764 cal, which is approximately 2.3 × 10^5 cal.

If a 2100-Kg Car Was Moving at 30 M/s,what Would