Mr. Simpkins introduces the concept of momentum, explaining it as mass in motion and differentiating it from inertia. He discusses the momentum equation (P = MV) and how force and time affect momentum through the impulse-momentum theorem. Practical examples, such as airbags and parkour, illustrate how extending the time of impact reduces force. The video emphasizes understanding momentum as how hard it is to stop an object.

What is the simplest way to define momentum?

• The energy of an object

• The force applied to an object

• Mass in motion

• The speed of an object

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Which of the following best describes inertia?

• The force applied over time

• A property of mass that resists changes in motion

• The product of mass and velocity

• The speed of an object

According to Newton's first law, what happens to an object in motion?

• It stays in motion unless acted upon by an unbalanced force

• It comes to a stop immediately

• It changes direction

• It loses mass

Which equation represents momentum?

• V = IR

• E = mc^2

• F = ma

• P = mV

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If a car is traveling at 5 mph and a baseball is traveling at 90 mph, which has more momentum?

• The car, because it has more mass

• The baseball, because it is faster

• It depends on both mass and velocity

• Neither, they have the same momentum

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What is impulse?

• The change in velocity

• The product of force and time

• The mass of an object

• The speed of an object

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How can you increase the momentum of an object?

• By increasing its mass or velocity

• By decreasing its mass

• By reducing the time of impact

• By applying a smaller force

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Why are airbags important in cars?

• They increase the time of impact, reducing the force

• They make the car heavier

• They increase the force of impact

• They reduce the time of impact

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What does the impulse-momentum theorem state?

• Force is equal to mass times acceleration

• Momentum is equal to mass times velocity

• Energy is conserved in a closed system

• Impulse is equal to the change in momentum

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Why should you bend your knees when landing from a jump?

• To increase the time of impact, reducing the force

• To increase the force of impact

• To make the jump higher

• To decrease the time of impact

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