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

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 and after a collision remains constant, provided no external forces act on it.

Front

How do you calculate the final velocity after a collision?

Back

For two objects colliding and sticking together, the final velocity can be calculated using the formula: (m1*v1 + m2*v2) / (m1 + m2), where m1 and m2 are the masses and v1 and v2 are their velocities before the collision.

Front

What is the formula for calculating momentum?

Back

The formula for momentum is p = mv, where p is momentum, m is mass, and v is velocity.

Front

What is the effect of a net force on an object's momentum?

Back

A net force acting on an object changes its momentum over time, as described by the impulse-momentum theorem: Impulse = Change in Momentum.

Front

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

Back

According to Newton's second law, Force = Mass × Acceleration (F = ma), indicating that the force applied to an object is equal to the mass of the object multiplied by its acceleration.

Front

How do you find the initial momentum of an object?

Back

Initial momentum can be found using the formula p_initial = m * v_initial, where m is the mass and v_initial is the initial velocity of the object.

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.