Momentum and Impulse 22-23

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 of its application.

Front

What is the principle of conservation of momentum?

Back

The principle of conservation of momentum states that in a closed system, the total momentum before an event (like a collision) is equal to the total momentum after the event.

Front

How do you calculate the total momentum of a system?

Back

Total momentum of a system is calculated by summing the momentum of all individual objects in the system: p_total = p1 + p2 + ... + pn.

Front

What is the relationship between impulse and momentum?

Back

Impulse is equal to the change in momentum of an object, expressed as Impulse = Δp = p_final - p_initial.

Front

What factors affect the momentum of an object?

Back

The momentum of an object depends on its mass and velocity; increasing either mass or velocity will increase momentum.

Front

How do you calculate impulse?

Back

Impulse can be calculated using the formula Impulse = Force × Time, or alternatively, Impulse = Change in Momentum.

Front

What happens to momentum in an elastic collision?

Back

In an 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; some kinetic energy is transformed into other forms of energy.

Front

What is the unit of momentum?

Back

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