Work and Power Concepts

Work and Power Concepts

Assessment

Flashcard

Physics

8th Grade

Practice Problem

Hard

Created by

Wayground Content

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15 questions

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1.

FLASHCARD QUESTION

Front

The work that comes OUT of a machine is called...

Back

output

2.

FLASHCARD QUESTION

Front

The work that goes INTO a machine is called...

Back

input

3.

FLASHCARD QUESTION

Front

What is the ideal mechanical advantage of a lever with an input arm of 4 meters and an output arm of 0.8 meters?

Back

5

4.

FLASHCARD QUESTION

Front

If 360 J of work is needed to move a crate a distance of 4 m, what is the weight (force) of the crate?

Back

90 N

5.

FLASHCARD QUESTION

Front

What is the AMA of a lever if a force of 50 N is applied to lift a rock that weighs 350 N?

Back

7

6.

FLASHCARD QUESTION

Front

Define 'work' in physics.

Back

Work is done when a force causes an object to move in the direction of the force. It is calculated as Work = Force x Distance.

7.

FLASHCARD QUESTION

Front

What is 'power' in the context of work?

Back

Power is the rate at which work is done, calculated as Power = Work / Time.

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