Impulse and Momentum

The video tutorial covers the concepts of impulse and momentum, starting with the definition of momentum as mass times velocity, a vector quantity. It explains how momentum is conserved and how it relates to impulse, which is the force applied over time. The impulse-momentum theorem is introduced, showing the relationship between impulse and change in momentum. Real-world examples, such as cars braking and baseball swings, illustrate these concepts. The tutorial concludes with a discussion on the conservation of momentum in collisions, using pool balls as an example.

What is the definition of linear momentum?

• Mass times velocity

• Velocity minus mass

• Velocity divided by mass

• Mass divided by velocity

How is impulse calculated?

• Force times time

• Distance divided by time

• Force times distance

• Force divided by time

What does the impulse-momentum theorem state?

• Impulse is equal to the change in velocity

• Impulse is equal to the change in momentum

• Impulse is equal to the change in mass

• Impulse is equal to the change in force

Why is it less painful to fall on a trampoline than on the ground?

• The trampoline increases the force of the fall

• The change in momentum is spread over a longer time

• The trampoline decreases the mass of the person

• The trampoline absorbs all the force

In a collision, what happens to the total momentum of the objects involved?

• It is halved

• It is conserved

• It is doubled

• It is lost