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# Two Billiard Balls Of Equal Mass – Exploring The Physics Of Motion Solved Two billiard balls of equal mass move at right angles from www.chegg.com

## Understanding the Physics Behind Billiard Balls

When two billiard balls of equal mass collide and move in opposite directions, it is a perfect example of Newton’s third law of motion. According to this law, “for every action, there is an equal and opposite reaction”. This means that when one billiard ball strikes the other, the second will move in the opposite direction with the same amount of force as the first. In other words, when two billiard balls of equal mass collide, they will both move away from each other at the same speed.

### The Momentum of Colliding Billiard Balls

When two billiard balls of equal mass collide, the momentum of the system remains constant. Momentum is the product of mass and velocity, and it is conserved in a collision. This means that if the two billiard balls have the same mass and the same velocity, the momentum of the system will stay the same after the collision. This law is referred to as the law of conservation of momentum, and it is an important concept in physics.

### The Kinetic Energy of Colliding Billiard Balls

In addition to momentum, the kinetic energy of the system is also conserved during a collision. Kinetic energy is the energy of motion, and it is equal to one half of the mass times the velocity squared. In other words, the kinetic energy of the system remains the same before and after the collision. This law is referred to as the law of conservation of energy, and it is another important concept in physics.

### The Angle of Deflection of Colliding Billiard Balls

When two billiard balls of equal mass collide, the angle of deflection (or the angle of incidence) is also important. This is the angle at which the balls deflect off of each other. The angle of deflection is determined by the initial velocities of the two balls and the angle of incidence. This angle is important because it determines the direction the balls will move after the collision.

### The Coefficient of Restitution of Colliding Billiard Balls

The coefficient of restitution (or COR) is a measure of the energy lost in a collision. It is calculated by dividing the final velocity of the two balls by the initial velocity of the balls. The COR is important because it determines how much energy is lost in a collision. In a perfectly elastic collision, the COR is equal to one, while in a perfectly inelastic collision, the COR is equal to zero.

### The Impulse of Colliding Billiard Balls

The impulse of two billiard balls of equal mass is also an important concept. The impulse is the product of the force and the time over which the force is applied. It is equal to the change in momentum of the system. In a collision between two billiard balls, the impulse is equal to the change in momentum of the system. This is an important concept in physics because it helps us understand the behavior of objects in a collision.

### The Friction of Colliding Billiard Balls

Friction is also an important concept when discussing the behavior of two billiard balls of equal mass. Friction is the force that opposes the motion of two objects that are in contact with each other. It is important to consider friction when discussing the behavior of two billiard balls because it can affect their speed and the angle of deflection. In fact, friction can completely alter the behavior of the two billiard balls after the collision.

### Conclusion

Understanding the physics behind two billiard balls of equal mass is essential for anyone who wants to accurately predict how the balls will behave in a collision. The laws of momentum, energy, and impulse are all important concepts to consider when studying the motion of two billiard balls. Additionally, the coefficient of restitution, the angle of deflection, and the friction involved in the collision are all important factors to consider. By understanding the physics behind two billiard balls of equal mass, we can better predict the behavior of the two balls after the collision.

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