Momentum and Impulse

Front

What does the law of conservation of momentum state?

Back

The total momentum of a closed system remains constant if no external forces act on it.

Front

If two objects collide inelastically, what happens to their momentum?

Back

The total momentum before the collision is equal to the total momentum after the collision.

Front

How do you calculate momentum?

Back

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

Front

What is the unit of momentum?

Back

The unit of momentum is kg-m/s.

Front

What is impulse?

Back

Impulse is the change in momentum of an object when a force is applied over a period of time.

Front

How is impulse related to force and time?

Back

Impulse (J) is calculated as J = FΔt, where F is the force applied and Δt is the time duration.

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.

Front

If a 1 kg object moving at 2 m/s collides with another 1 kg object at rest, what is the final velocity of both objects after an inelastic collision?

Back

The final velocity of both objects will be 1 m/s.

Front

What is the formula for calculating the final velocity of two colliding objects?

Back

The formula is m1v1i + m2v2i = m1v1f + m2v2f.

Front

How do you determine the change in momentum?

Back

Change in momentum is determined by subtracting the initial momentum from the final momentum.