Chapter 4 - Momentum and Energy

What is momentum, and how does a heavy truck compare to a light car moving at the same speed in terms of momentum?

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NGSS.HS-PS2-2

Explain the concept of impulse and provide an example of how it is applied to increase the speed of an object.

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NGSS.HS-PS2-1

Describe the impulse-momentum relationship. How does extending the time of impact affect the force experienced during a collision?

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NGSS.HS-PS2-2

NGSS.HS-PS2-3

State the law of conservation of momentum. What type of forces are relevant when applying this law to a system?

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NGSS.HS-PS2-2

Distinguish between an elastic and an inelastic collision. Is momentum conserved in both types of collisions?

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NGSS.HS-PS2-2

Define work in a scientific context. What two factors must be present for work to be done on an object?

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NGSS.HS-PS3-2

What is power, and why might you get more tired running up stairs quickly compared to walking up them slowly, even though the same amount of work is done?

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NGSS.HS-PS2-1

Explain what potential energy is. Give an example of two different forms of potential energy.

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NGSS.HS-PS2-4

How is kinetic energy related to an object's mass and speed? What happens to a car's kinetic energy if its speed doubles?

Describe the work-energy theorem. How does this theorem explain why a car traveling faster requires a longer braking distance?

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NGSS.HS-PS3-1