Impulse Momentum Theory Practice

Front

What is impulse?

Back

Impulse is the product of the average force applied to an object and the time duration over which the force is applied. It is measured in Newton-seconds (N·s).

Front

What is the impulse-momentum theorem?

Back

The impulse-momentum theorem states that the impulse on an object is equal to the change in its momentum. Mathematically, Impulse = Δp = p_final - p_initial.

Front

How do you calculate impulse?

Back

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

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity. It is a vector quantity and is measured in kg·m/s.

Front

How do you calculate momentum?

Back

Momentum (p) can be calculated using the formula: p = mass × velocity.

Front

What is the relationship between impulse and momentum?

Back

Impulse is equal to the change in momentum of an object. This means that applying an impulse to an object will change its momentum.

Front

What happens to momentum in a collision?

Back

In a closed system, the total momentum before a collision is equal to the total momentum after the collision (law of conservation of momentum).

Front

What is the difference between elastic and inelastic collisions?

Back

In elastic collisions, both momentum and kinetic energy are conserved. In inelastic collisions, momentum is conserved, but kinetic energy is not.

Front

How does 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 constant (Impulse = Force × Time).

Front

What is the significance of a longer collision time in safety features of vehicles?

Back

Longer collision times in safety features (like crumple zones) reduce the force experienced by passengers, minimizing injury.