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

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 the force application.

Front

How does increasing the time of impact affect the force experienced during a collision?

Back

Increasing the time of impact decreases the average force experienced during a collision, as impulse is equal to force multiplied by 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

What happens in an elastic collision?

Back

In an elastic collision, both momentum and kinetic energy are conserved, and the objects bounce off each other without any loss of energy.

Front

What happens in an inelastic collision?

Back

In an inelastic collision, momentum is conserved, but kinetic energy is not; the objects may stick together or deform.

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

How can padded dashboards in cars increase safety during a collision?

Back

Padded dashboards increase the time of impact, which decreases the average force experienced by passengers, reducing the risk of injury.

Front

If a 5 kg ball has a momentum of 30 kg*m/s, what is its speed?

Back

The speed of the ball is 6 m/s, calculated using the formula p = mv.

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.