Force, Momentum, and Potential Energy
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Imagine someone stretching a rubber band so they can use it to launch a ball of paper across the room. They pull the rubber band back, and place a ball of paper in it. Then they release the rubber band, causing the paper to move forward and fly across the room.
Use this example to answer the following questions.
Use this example to answer the following questions.
A.
As the rubber band is released and moves forward, which of the following is true?
- The total energy of the system is increasing.
- Potential energy is being converted to kinetic energy.
- Kinetic energy is being converted to potential energy.
- All of the energy is disappearing from the system.
B.
What makes the paper ball fly through the air after it is no longer touching the rubber band?
- the momentum of the ball
- the force of air resistance
- the force of the rubber band
- the efficiency of the system
D.
If you use a rubber band as a slingshot for a paper ball, which of the following best describes when the rubber band is doing work on the paper ball?
- when it is stretched completely and not moving
- when it is moving forward
- after the ball is launched into the air
- it applies the same force until the ball hits something
E.
What best describes the type of energy provided by the rubber band as it is stretched?
- Gravitational Potential Energy
- Kinetic Energy
- Thermal Energy
- Elastic Potential Energy