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
Chemistry, 22.06.2019 21:40
A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?
Answers: 3
Chemistry, 23.06.2019 03:50
What is the equation fort the alkaline zinc/manganese dioxide cell. a) anode b)cathode c)overall equations.
Answers: 2
Chemistry, 23.06.2019 06:20
Why is it that 85.48 rounded to two significant figures is 85 and not 86?
Answers: 1
A model car is powered by releasing air from an inflated balloon. A student performs an experiment b...
History, 18.10.2021 21:40
Mathematics, 18.10.2021 21:40
Mathematics, 18.10.2021 21:40
Business, 18.10.2021 21:40
Mathematics, 18.10.2021 21:40
Chemistry, 18.10.2021 21:40
Mathematics, 18.10.2021 21:40