Momentum/Impulse Flashcard

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

How is impulse related to momentum?

Back

Impulse is equal to the change in momentum of an object. It can be calculated using the formula Impulse = Force × Time.

Front

What are the units of momentum?

Back

The units of momentum are kilogram-meters per second (kg·m/s).

Front

How do you calculate the momentum of an object?

Back

Momentum is calculated using the formula p = mv, where p is momentum, m is mass in kilograms, and v is velocity in meters per second.

Front

If a 5 kg ball has a momentum of 30 kg*m/s, what is its speed?

Back

6 m/s.

Front

Which object has the greatest momentum: 0.05 kg at 0.2 m/s, 0.15 kg at 2 m/s, 0.15 kg at 1 m/s, or 0.4 kg at 2 m/s?

Back

0.4 kg object rolling at 2 m/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 (conservation of momentum).

Front

What is the formula for calculating impulse?

Back

Impulse = Change in Momentum = Final Momentum - Initial Momentum.

Front

What is the principle of conservation of momentum?

Back

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

Front

If two objects collide and stick together, how do you find their final speed?

Back

Use the conservation of momentum: (m1*v1 + m2*v2) / (m1 + m2) = final speed.