Exploring Kinetic and Potential Energy Transformations

Mr. Anderson explains kinetic and potential energy, using a wrecking ball and skateboarder simulation to illustrate energy conversion and conservation. He discusses internal energy, closed systems, and the impact of friction on energy loss. The video includes calculations of potential and kinetic energy, emphasizing the conservation of energy principle.

What type of energy is associated with motion?

• Kinetic energy

• Potential energy

• Thermal energy

• Chemical energy

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NGSS.HS-PS3-2

What happens to the wrecking ball's energy when it is lifted by the crane?

• It gains kinetic energy

• It remains the same

• It loses energy

• It gains potential energy

In a closed system, what happens to the total internal energy?

• It fluctuates

• It decreases

• It increases

• It remains constant

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NGSS.HS-PS3-2

What type of energy does the skateboarder have at the top of the ramp?

• Kinetic energy

• Thermal energy

• Potential energy

• Chemical energy

What is the total energy of the skateboarder in the PHET simulation?

• 75 joules

• 5900 joules

• 9.8 joules

• 3448 joules

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NGSS.HS-PS3-1

What happens to the skateboarder's energy when friction is increased?

• It remains the same

• It converts to thermal energy

• It converts to electrical energy

• It converts to chemical energy

How much potential energy does a 75 kg skateboarder have at a height of 8 meters?

• 5900 joules

• 75 joules

• 3448 joules

• 9.8 joules

Tags

NGSS.HS-PS3-1

What is the equation for calculating potential energy?

• m g Δy

• 1/2 g h

• m v^2

• 1/2 m v^2

What is the skateboarder's speed at the bottom of the ramp if all potential energy is converted to kinetic energy?

• 8 meters per second

• 15 meters per second

• 9.8 meters per second

• 13 meters per second

Tags

NGSS.HS-PS3-1

What principle allows us to predict the skateboarder's speed and energy at different points?

• Conservation of Energy

• Newton's First Law

• Law of Inertia

• Law of Thermodynamics

Tags

NGSS.HS-PS3-1