Momentum and Impulse

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 type of quantity is momentum?

Back

Momentum is a vector quantity, meaning it has both magnitude and direction.

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 the product of force and time (Impulse = Force × Time).

Front

What type of quantity is impulse?

Back

Impulse is also a vector quantity, as it has both magnitude and direction.

Front

What is an inelastic collision?

Back

An inelastic collision is a type of collision where the colliding objects stick together after the collision, resulting in a loss of kinetic energy.

Front

What is an elastic collision?

Back

An elastic collision is a type of collision where both momentum and kinetic energy are conserved, and the objects bounce off each other.

Front

How does increasing the time of impact reduce injury in a collision?

Back

Increasing the time of impact reduces the force experienced by the body during a collision, as force is equal to the change in momentum divided by the time taken (F = Δp/Δt).

Front

What is the formula for calculating impulse?

Back

Impulse (J) = Force (F) × Time (t).

Front

If a force of 10 N is applied for 2 seconds, what is the impulse?

Back

Impulse = 10 N × 2 s = 20 N*s.

Front

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

Back

In a closed system, the total momentum before the collision is equal to the total momentum after the collision (Law of Conservation of Momentum).