Question
If a football player wants to become better at tackling by increasing his or her kinetic energy, what two ways can the player do this? (4 points)
Responses
Increase height
Increase height
Increase speed
Increase speed
Increase mass
Increase mass
Decrease speed
Responses
Increase height
Increase height
Increase speed
Increase speed
Increase mass
Increase mass
Decrease speed
Answers
GPT-4o mini
To increase kinetic energy, a football player can focus on the following two methods:
1. **Increase speed**: Kinetic energy (KE) is given by the formula \( KE = \frac{1}{2}mv^2 \), where \( m \) is mass and \( v \) is velocity (speed). By increasing speed, the player can significantly increase their kinetic energy because speed is squared in the equation.
2. **Increase mass**: Since kinetic energy is also dependent on mass, increasing the player's mass (while maintaining or improving other aspects of their game) will also contribute to an increase in kinetic energy.
Therefore, the correct responses are:
- Increase speed
- Increase mass
1. **Increase speed**: Kinetic energy (KE) is given by the formula \( KE = \frac{1}{2}mv^2 \), where \( m \) is mass and \( v \) is velocity (speed). By increasing speed, the player can significantly increase their kinetic energy because speed is squared in the equation.
2. **Increase mass**: Since kinetic energy is also dependent on mass, increasing the player's mass (while maintaining or improving other aspects of their game) will also contribute to an increase in kinetic energy.
Therefore, the correct responses are:
- Increase speed
- Increase mass