Engineering Board Exam Reviewer · Thermodynamics · medium
A 1000-kg car moves at 25 m/s. What is its kinetic energy?
- 25 kJ
- 625 kJ
- 12.5 kJ
- 312.5 kJ
Answer
D. 312.5 kJ
Solution
KE = 1/2mV2 = 1/2(1000)(25)2 = 312,500 J = 312.5 kJ.
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