Practice Conditions For Work (2.1.3) - Work, Energy and Power

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6 sample questions

Question 1.
What is the formula for work?
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Remember that it involves force, displacement, and angle.
Question 2.
What type of work is done when you push a box across a floor?
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Consider the direction of force and movement.
3Question 3.
Which of the following is true about work?
- It can be done without moving an object.
- It requires force and displacement.
- It is only done in the vertical direction.
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Think about the definition of work.
4Question 4.
If no displacement occurs, is work done?
- True
- False
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Consider the conditions required for work.
Question 5.
A 5 kg object is pushed at an angle of 30 degrees with a force of 15 N. Calculate the work done if it is displaced by 4 meters.
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Break down the force using the cosine of the angle.
Question 6.
A lawn mower is pushed with a force of 50 N at an angle of 60 degrees over a distance of 10 m. How much work is done?
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Remember to resolve the angle in the cosine function.

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