Question 4
You have a balloon that has been blown up and then released without tying the
end. The balloon moves forward as the air rushes out.
a. What type of energy is stored in a balloon when it is blown up? [1 mark]
b. Assume that the balloon and the escaping air have a combined mass of 0.05
kg. After the balloon is released, it reaches a velocity of 8 m/s in air. Calculate
the kinetic energy of the balloon at this velocity. [2 marks]
c. If the balloon were released in a vacuum, would you expect the kinetic energy
of the balloon to be greater than, less than, or the same as the kinetic energy
calculated in Part b? Explain your answer. [2 marks]
end. The balloon moves forward as the air rushes out.
a. What type of energy is stored in a balloon when it is blown up? [1 mark]
b. Assume that the balloon and the escaping air have a combined mass of 0.05
kg. After the balloon is released, it reaches a velocity of 8 m/s in air. Calculate
the kinetic energy of the balloon at this velocity. [2 marks]
c. If the balloon were released in a vacuum, would you expect the kinetic energy
of the balloon to be greater than, less than, or the same as the kinetic energy
calculated in Part b? Explain your answer. [2 marks]