Introduction to Momentum and Conservation of Momentum

The video tutorial covers the concept of momentum, its calculation, and its conservation. It begins by explaining momentum as a vector quantity, calculated as mass times velocity. The tutorial then explores momentum in systems with multiple objects, emphasizing the importance of direction. It illustrates the conservation of momentum through examples, including a collision between a locomotive and a truck, and an explosion where an object splits into fragments. The video demonstrates how total momentum before and after events remains constant in closed systems.

What is the formula for calculating momentum?

• p = mv

• p = v / m

• p = m / v

• p = m + v

Why is momentum considered a vector quantity?

• Because it has both magnitude and direction

• Because it depends on mass

• Because it is always positive

• Because it is measured in meters per second

In a system with two objects moving in opposite directions, how is total momentum calculated?

• By adding the momenta of both objects

• By subtracting the momentum of one object from the other

• By multiplying the momenta of both objects

• By dividing the momentum of one object by the other

What happens to the total momentum in a closed system after an event?

• It increases

• It becomes zero

• It decreases

• It remains the same

In the explosion example, what is the velocity of the fragment moving to the right?

• 250 meters per second

• 100 meters per second

• 150 meters per second

• 200 meters per second