Impulse and Momentum

Front

What is impulse in physics?

Back

Impulse is the change in momentum of an object when a force is applied over a period of time. It is calculated as the product of the average force and the time duration over which the force acts.

Front

How is momentum defined?

Back

Momentum is defined as the product of an object's mass and its velocity. It is a vector quantity, meaning it has both magnitude and direction.

Front

What is the principle of conservation of momentum?

Back

The principle of conservation of momentum states that in an isolated system, the total momentum before any interaction (collision or explosion) is equal to the total momentum after the interaction.

Front

How do you calculate impulse?

Back

Impulse can be calculated using the formula: Impulse = Force × Time = Change in Momentum.

Front

What is the unit of impulse?

Back

The unit of impulse is Newton-seconds (N·s) or kg·m/s.

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

How do you find the total momentum of a system?

Back

The total momentum of a system is found by vectorially adding the momenta of all individual objects in the system.

Front

What is the formula for calculating the net force required to stop an object?

Back

The net force required to stop an object can be calculated using the formula: Net Force = (Mass × Change in Velocity) / Time.

Front

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

Back

The relationship is defined by Newton's second law of motion: Force = Mass × Acceleration.