Momentum, Impulse, and Conservation of Momentum

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

What is impulse?

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, represented by the formula J = FΔt.

Front

What are the units of momentum?

Back

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

Front

What are the units of impulse?

Back

The standard unit of impulse is Newton second (N s), which is equivalent to kg m/s.

Front

State the Law of Conservation of Momentum.

Back

The Law of Conservation of Momentum states that the total momentum of a closed system remains constant if no external forces act on it.

Front

How do you calculate the momentum of an object?

Back

Momentum (p) is calculated using the formula p = mv, where m is the mass of the object and v is its velocity.

Front

What happens to momentum in a perfectly elastic collision?

Back

In a perfectly elastic collision, both momentum and kinetic energy are conserved.

Front

What happens to momentum in an inelastic collision?

Back

In an inelastic collision, momentum is conserved, but kinetic energy is not conserved.

Front

If two objects collide and stick together, what is the outcome for their velocities?

Back

Their combined mass moves with a common velocity that is less than the initial velocities of the individual objects.

Front

What is the formula for calculating impulse?

Back

Impulse (J) can be calculated using the formula J = FΔt, where F is the average force applied and Δt is the time duration.