Potential and Kinetic Energy Background
Potential energy is stored energy. Often, the energy is stored due to an object’s position, such as its position above the ground. The amount of potential energy depends on the height of the object above the ground. The amount of potential energy also depends on the mass of the object.
Kinetic energy is energy of motion. Objects in motion have kinetic energy. Kinetic energy depends on how fast the object is moving. Kinetic energy also depends on the mass of the object.
When an object is up high, it has potential energy. If it falls or rolls downward, its potential energy is converted to kinetic energy as it falls or rolls downward. As its kinetic energy increases, its speed increases.
Imagine a ball rolls down a hill. Its potential energy decreases, and its kinetic energy increases.
Now imagine that ball hits a plastic cup at the bottom of the hill. The ball’s kinetic energy can be used to move that cup. The more kinetic energy the ball has, the more it can move the cup it hits at the bottom of the hill.
1. How will changing each property affect the potential energy of an object?(2 points)
This will increase the object's potential energy. This will decrease the object's potential energy.increasing the object's height above the ground This will increase the object's potential energy. – increasing the object's height above the ground This will decrease the object's potential energy. – increasing the object's height above the ground decreasing an object's height above the ground This will increase the object's potential energy. – decreasing an object's height above the ground This will decrease the object's potential energy. – decreasing an object's height above the ground increasing the object's mass This will increase the object's potential energy. – increasing the object's mass This will decrease the object's potential energy. – increasing the object's mass decreasing the object's mass This will increase the object's potential energy. – decreasing the object's mass This will decrease the object's potential energy. – decreasing the object's mass
. How will changing each property impact the kinetic energy of a moving object?(2 points)
Increase or decrease
_______ speed will increase kinetic energy. _________ mass will increase kinetic energy. _________ speed will decrease kinetic energy. __________ mass will decrease kinetic energy.
11 answers
Potential energy is stored energy. Often, the energy is stored due to an object’s position, such as its position above the ground. The amount of potential energy depends on the height of the object above the ground. The amount of potential energy also depends on the mass of the object.
Kinetic energy is energy of motion. Objects in motion have kinetic energy. Kinetic energy depends on how fast the object is moving. Kinetic energy also depends on the mass of the object.
When an object is up high, it has potential energy. If it falls or rolls downward, its potential energy is converted to kinetic energy as it falls or rolls downward. As its kinetic energy increases, its speed increases.
Imagine a ball rolls down a hill. Its potential energy decreases, and its kinetic energy increases.
Now imagine that ball hits a plastic cup at the bottom of the hill. The ball’s kinetic energy can be used to move that cup. The more kinetic energy the ball has, the more it can move the cup it hits at the bottom of the hill.
1. How will changing each property affect the potential energy of an object?(2 points)
This will increase the object's potential energy. This will decrease the object's potential energy.increasing the object's height above the ground This will increase the object's potential energy. – increasing the object's height above the ground This will decrease the object's potential energy. – increasing the object's height above the ground decreasing an object's height above the ground This will increase the object's potential energy. – decreasing an object's height above the ground This will decrease the object's potential energy. – decreasing an object's height above the ground increasing the object's mass This will increase the object's potential energy. – increasing the object's mass This will decrease the object's potential energy. – increasing the object's mass decreasing the object's mass This will increase the object's potential energy. – decreasing the object's mass This will decrease the object's potential energy. – decreasing the object's mass
Increase or decrease
_______ speed will increase kinetic energy. _________ mass will increase kinetic energy. _________ speed will decrease kinetic energy. __________ mass will decrease kinetic energy.
- **Increasing** speed will increase kinetic energy.
- **Increasing** mass will increase kinetic energy.
- **Decreasing** speed will decrease kinetic energy.
- **Decreasing** mass will decrease kinetic energy.
This will increase the object's potential energy This will decrease the object's potential energy.
increasing the object's height above the ground
decreasing the object's height above the ground
increasing the object's mass.
decreasing the objects mass.
1. Increasing the object's height above the ground will **increase** the object's potential energy.
2. Decreasing the object's height above the ground will **decrease** the object's potential energy.
3. Increasing the object's mass will **increase** the object's potential energy.
4. Decreasing the object's mass will **decrease** the object's potential energy.
This will increase the object's potential energy This will decrease the object's potential energy.
increasing the object's height above the ground
decreasing the object's height above the ground
increasing the object's mass.
decreasing the objects mass.
1. **Increasing** the object's height above the ground will increase the object's potential energy.
2. **Decreasing** the object's height above the ground will decrease the object's potential energy.
3. **Increasing** the object's mass will increase the object's potential energy.
4. **Decreasing** the object's mass will decrease the object's potential energy.