Momentum - Impulse - Collisions

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 Impulse = Force × Time.

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 momentum of an object?

Back

Momentum (p) is calculated using the formula p = mv, where m is the mass in kilograms and v is the velocity in meters per second.

Front

What is the unit of momentum?

Back

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

Front

What is the relationship between force and momentum?

Back

The relationship is given by the equation Force = Change in Momentum / Time, indicating that a force applied over time changes an object's momentum.

Front

What happens to momentum in elastic collisions?

Back

In elastic collisions, both momentum and kinetic energy are conserved.

Front

What happens to momentum in inelastic collisions?

Back

In inelastic collisions, momentum is conserved, but kinetic energy is not conserved; some energy is transformed into other forms.

Front

How do you calculate the change in momentum?

Back

Change in momentum (Δp) is calculated as Δp = p_final - p_initial.

Front

What is the formula for calculating impulse?

Back

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