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 × 10^4
c. 3.8 × 10^6
b. 2.3 × 10^5
d. 1.1 × 10^5


B

Physics & Space Science

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