Impulse

Mr. Andersen explains impulse as the product of force and time, illustrating its equivalence to momentum change. Using examples like a baseball hit and a car crash, he demonstrates how impulse affects momentum and force. The video covers calculations of impulse and force, emphasizing the importance of time in reducing force impact. Viewers learn to solve problems using these concepts, with practical examples and calculations provided.

What is impulse in physics?

• The force applied to an object

• The change in velocity over time

• The product of force and time

• The product of mass and velocity

In the example of two spheres dropped on a table, what remains the same for both spheres?

• The change in momentum

• The time of interaction

• The force applied

• The height from which they are dropped

What is the relationship between impulse and momentum change?

• Impulse is unrelated to momentum change

• Impulse is double the momentum change

• Impulse is half of momentum change

• Impulse and momentum change are equivalent

How does increasing the time of impact affect the force experienced in a car crash?

• It increases the force

• It decreases the force

• It has no effect on the force

• It doubles the force

Which law of physics is used to calculate impulse and force?

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

• Law of Conservation of Energy

What is the impulse experienced by a car if its mass is 1,301 kg and the change in velocity is 15.6 m/s?

• 1,301 Ns

• 10,000 Ns

• 15,000 Ns

• 20,000 Ns

How can you calculate the force applied to an object if you know the impulse and the time?

• Multiply impulse by time

• Subtract time from impulse

• Divide impulse by time

• Add impulse and time