In a closed system of a canon and a canon ball which changes would both result in an increase in kinetic energy
In a closed system of a cannon and a cannonball, there are several changes that would result in an increase in kinetic energy:
1. Increasing the velocity of the cannonball: As the cannonball travels faster, its kinetic energy increases. This can be achieved by using a more powerful explosive to propel the cannonball or by adjusting the angle and force of the cannon.
2. Increasing the mass of the cannonball: According to the equation for kinetic energy (KE = 0.5 * mass * velocity^2), an increase in mass would result in a proportional increase in kinetic energy. This can be accomplished by using a larger or denser cannonball.
3. Decreasing the friction between the cannonball and the cannon: Frictional forces can oppose the motion of the cannonball, reducing its kinetic energy. By minimizing friction, either by using lubrication or ensuring a smoother surface, more kinetic energy can be retained.
4. Reducing air resistance: Air resistance can act as a resisting force on the cannonball, decreasing its kinetic energy. By minimizing air resistance through streamlined shapes or reducing the density of the medium (e.g., by firing the cannonball in a vacuum), more kinetic energy can be maintained.
It's important to note that while these changes can increase kinetic energy, they would need to be balanced with other considerations, such as safety and practicality.