Momentum and Impulse

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented by the formula p = mv, where p is momentum, m is mass, and v is velocity.

Front

How is impulse defined?

Back

Impulse is the change in momentum of an object when a force is applied over a period of time, calculated as the product of the average force and the time duration of its application.

Front

What is the formula for calculating momentum?

Back

The formula for calculating momentum is p = mv, where p is momentum, m is mass, and v is velocity.

Front

What happens to momentum in a closed system during a collision?

Back

In a closed system, the total momentum before the collision is equal to the total momentum after the collision, according to the law of conservation of momentum.

Front

What is the relationship between force and impulse?

Back

Impulse is equal to the change in momentum, which can also be expressed as the product of force and the time duration over which the force acts: Impulse = Force × Time.

Front

How does mass affect momentum?

Back

The greater the mass of an object, the greater its momentum for a given velocity, as momentum is directly proportional to mass.

Front

How does velocity affect momentum?

Back

The greater the velocity of an object, the greater its momentum for a given mass, as momentum is directly proportional to velocity.

Front

What is the effect of a collision where two objects stick together?

Back

In a collision where two objects stick together, their combined mass moves with a common velocity, resulting in a decrease in their individual velocities due to conservation of momentum.

Front

What is the difference between elastic and inelastic collisions?

Back

In elastic collisions, both momentum and kinetic energy are conserved, while inelastic collisions conserve momentum but not kinetic energy.

Front

What is the unit of momentum?

Back

The unit of momentum is kilogram-meter per second (kg·m/s).