A model car is powered by releasing air from an inflated balloon. A student performs an experiment by inflating the balloon to different sizes and measuring the car’s speed as the air is released. The sketch shows the model car, and the table gives the results from the experiment.
Balloon
Circumference
(cm)Car’s Speed
(m/s)
50.5
102
153
206
Which explanation correctly describes how the energy of the balloon-powered car changes as the balloon is inflated to a larger size and then released?
The gravitational potential energy and kinetic energy both increase.
The gravitational potential energy and kinetic energy both increase.
The elastic potential energy decreases, and the gravitational potential energy remains the same.
The elastic potential energy decreases, and the gravitational potential energy remains the same.
The kinetic energy decreases, and t
Answers: 1
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A model car is powered by releasing air from an inflated balloon. A student performs an experiment b...
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