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Flashcards: Explain how an object's speed relates to its energy

Glen and his friends Liam and London are going sledding at a local park. There are two hills to choose from, "The Bunny Slopes," which are small hills and lots of flat surfaces, and "The Dragon," which is a steep hill and not for beginners. Glen crashes a lot, and his friends are a little nervous. If Glen were to crash into Liam and London when they were sledding, how would the crash be different on "The Bunny Slopes" than "The Dragon"?

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A crash on "The Dragon" would have more energy and speed associated with it because it is a steeper hill, so the impact would propel Liam and London forward a long distance.

A crash on "The Dragon" or "The Bunny Slopes" would be the same because Glen would hit Liam and London with the same amount of force and speed.

A crash on "The Bunny Slopes" would have more energy and speed associated with it because it is a steeper hill, so the impact would propel Liam and London forward a long distance.

A crash on "The Dragon" would have less energy and speed associated with it because it is less steep of a hill, so the impact would propel Liam and London forward a short distance.

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Flashcards: Explain how an object's speed relates to its energy

Screen shot 2020 06 23 at 8.39.50 am

Your answer:

A crash on "The Dragon" or "The Bunny Slopes" would be the same because Glen would hit Liam and London with the same amount of force and speed.

Your answer:

A crash on "The Bunny Slopes" would have more energy and speed associated with it because it is a steeper hill, so the impact would propel Liam and London forward a long distance.

Your answer:

A crash on "The Dragon" would have less energy and speed associated with it because it is less steep of a hill, so the impact would propel Liam and London forward a short distance.

Correct answer:

A crash on "The Dragon" would have more energy and speed associated with it because it is a steeper hill, so the impact would propel Liam and London forward a long distance.

Explanation:

When Glen sleds down both of these hills, he will be traveling at a speed relative to the slope of the hill and gravity's pull. "The Dragon" is a much steeper and longer decline, so Glen will have more time to gain speed, which means more energy behind the collision. If Liam and London are down at the end of the slope and Glen crashes into them, the force will drive both of their sleds forward and slow or stop Glen's sled. The faster Glen is going, the more energy he has behind the impact.

Flashcards: Explain how an object's speed relates to its energy

Peter sets up his toy train on the railroad tracks he has in a straight line. He has a tool to measure the speed the train is traveling in centimeters/second when he pushes it to go. He set a box at the end of the ramp for the train to crash into. He measures in centimeters how far the train pushes the box and records the data in a table.

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What would happen to the distance the box moves if the train increases in speed?

The box would move the same distance as a train moving at 70 cm/s.

The box would move a shorter distance.

The box would move a longer distance.

The box would move the same distance as a train moving at 30 cm/s.

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Flashcards: Explain how an object's speed relates to its energy

Screen shot 2020 06 22 at 4.52.35 pm

What would happen to the distance the box moves if the train increases in speed?

Your answer:

The box would move the same distance as a train moving at 70 cm/s.

Your answer:

The box would move a shorter distance.

Your answer:

The box would move the same distance as a train moving at 30 cm/s.

Correct answer:

The box would move a longer distance.

Explanation:

Peter’s investigation was testing how the distance a box moved would change as the speed of a toy train increased or decreased. The pattern within the data table shows that the higher the rate of the train, the further the box moved. An inference can be made that the higher something’s speed is, the more energy it has. Higher amounts of energy will result in a more significant change of motion for the object it is acting on. When the speed decreases, the distance the box moves also decreases. There is a direct relationship between speed and energy. So if he were to increase the speed of the train, the box would move a longer distance.

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Flashcards: Explain how an object's speed relates to its energy

Flashcards: Explain how an object's speed relates to its energy

Flashcards: Explain how an object's speed relates to its energy

Flashcards: Explain how an object's speed relates to its energy

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All 4th Grade Science Resources

Flashcards: Explain how an object's speed relates to its energy

Flashcards: Explain how an object's speed relates to its energy

Flashcards: Explain how an object's speed relates to its energy

Flashcards: Explain how an object's speed relates to its energy

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DMCA Complaint

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