Momentum and Impulse Concepts

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 is impulse?

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.

Front

How do air bags in cars work to increase safety?

Back

Air bags increase the time of impact during a collision, which reduces the force experienced by passengers, thereby decreasing the risk of injury.

Front

Calculate the momentum of a 50 kg ball rolling at 5 m/s.

Back

Momentum = mass × velocity = 50 kg × 5 m/s = 250 kg*m/s.

Front

What is the principle of conservation of momentum?

Back

The principle states that in a closed system, the total momentum before a collision is equal to the total momentum after the collision.

Front

If a biker has a mass of 75 kg and moves at 5 m/s, what is their momentum?

Back

Momentum = mass × velocity = 75 kg × 5 m/s = 375 kg*m/s.

Front

What happens to momentum during a collision?

Back

The total momentum before the collision is equal to the total momentum after the collision, assuming no external forces act on the system.

Front

What is the relationship between force, time, and impulse?

Back

Impulse is equal to the product of force and the time duration over which the force acts: Impulse = Force × Time.

Front

If a person on a skateboard throws a bowling ball, what happens to their speed?

Back

The person will move in the opposite direction of the thrown ball, and their speed can be calculated using conservation of momentum.

Front

What is the formula for calculating momentum?

Back

Momentum (p) = mass (m) × velocity (v).