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CBSE
Class 9
Science
Exploration
Work, Energy, and Simple Machines
Question Bank

Which of the following express...

Single Answer MCQ
Q-00172002

Which of the following expressions represents the work done on an object lifted vertically?

1

Work = F × d

2

Work = mv^2

3

Work = mg × h

4

Work = 1/2mv^2

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What is the work done when a constant force of 10 N displaces an object by 2 m in the direction of the force?

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Q2.

If no displacement occurs, what is the work done by any force?

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A person lifts a 5 kg bag of wheat to a height of 1 m. What is the work done against gravity (g = 9.8 m/s²)?

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Q4.

Which of the following situations results in positive work done?

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