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The potato cannon uses the basic principle behind any reciprocating internal combustion engine: If you
put a tiny amount of high-energy fuel (like gasoline) in a small, enclosed space and ignite it, an incredible
amount of energy is released in the form of expanding gas. You can use that energy to propel a potato
500 feet. In this case, the energy is translated into potato motion. You can also use it for more interesting
purposes. For example, if you can create a cycle that allows you to set off explosions like this hundreds
of times per minute, and if you can harness that energy in a useful way, what you have is the core of a car
engine!
An internal combustion engine is compared to an)
in the passage above.
a.
external combustion engine
C. potato cannon
b. military cannon
d. jet engine
Please select the best answer from the choices provided
Ο Α
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