Intro to Impulse and Momentum

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented by the formula p = mv.

Front

What are the units of momentum?

Back

The units for momentum are kg·m/s.

Front

How is impulse defined?

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 (Ft).

Front

What is the relationship between impulse and momentum?

Back

Impulse is equal to the change in momentum of an object: Impulse = Δp = p_final - p_initial.

Front

What factors affect the momentum of an object?

Back

Momentum depends on the mass and velocity of the object.

Front

How do you calculate the momentum of an object?

Back

Momentum (p) is calculated using the formula p = mv, where m is mass and v is velocity.

Front

What is the purpose of crumple zones in cars?

Back

Crumple zones are designed to increase the time of impact during a collision, reducing the force experienced by occupants.

Front

If a 2 kg cart has a momentum of 16 kg m/s, what is its velocity?

Back

The velocity of the cart is 8 m/s.

Front

What is the impulse experienced by an object if a force of 20 N acts on it for 0.3 seconds?

Back

The impulse is 6 N·s.

Front

What is the formula for calculating impulse?

Back

Impulse (J) = Force (F) × Time (t).