Impulse and Momentum

Front

What is impulse?

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

What is momentum?

Back

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

Front

How is momentum calculated?

Back

Momentum (p) is calculated using the formula: p = mass (m) x velocity (v).

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 is the relationship between impulse and momentum?

Back

Impulse is equal to the change in momentum of an object. Mathematically, Impulse = Change in Momentum = Final Momentum - Initial Momentum.

Front

What happens to momentum in a perfectly elastic collision?

Back

In a perfectly 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.

Front

What is the formula for calculating impulse?

Back

Impulse (J) is calculated using the formula: J = Force (F) x Time (t).

Front

How does increasing the time of impact affect the force experienced by an object?

Back

Increasing the time of impact reduces the force experienced by an object, as impulse is constant; a longer time means a smaller force.

Front

What is the unit of momentum?

Back

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