Momentum and Impulse

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented by the equation 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 Impulse = Force × Time.

Front

What is the law of conservation of momentum?

Back

The law 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 is an elastic collision?

Back

An elastic collision is a type of collision where both momentum and kinetic energy are conserved.

Front

What is an inelastic collision?

Back

An inelastic collision is a type of collision where momentum is conserved, but kinetic energy is not conserved; the objects may stick together after the collision.

Front

How do you calculate the total momentum of a system?

Back

Total momentum is calculated by summing the momentum of all individual objects in the system: Total Momentum = m1v1 + m2v2 + ... + mnvn.

Front

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

Back

In a closed system, the total momentum remains constant during a collision, regardless of the type of collision.

Front

What is the formula for calculating impulse?

Back

Impulse = Change in Momentum = Final Momentum - Initial Momentum.

Front

If a 10kg object is moving at 5m/s, what is its momentum?

Back

Momentum = mass × velocity = 10kg × 5m/s = 50 kgm/s.

Front

What is the relationship between force, mass, and acceleration?

Back

According to Newton's second law, Force = mass × acceleration (F = ma).