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What’s the efficiency of a car that uses 400,000 J of energy from gasoline to make 48,000 J of kinetic energy?
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4 votes
What’s the efficiency of a car that uses 400,000 J of energy from gasoline to make 48,000 J of kinetic

energy?

User Alexbw
by
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1 Answer

6 votes
To calculate efficiency you should divide output by input energy.

The engine produces 48000 j energy from 400000 j given energy from gasoline.

48 000/400 000 = 48/400 = 12/100 = 12%

Efficiency of this engine is 12%
User Tristen
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