Work and Energy

Question 1

What is the primary difference between work and energy?

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Question 2

Which of the following is an example of potential energy?

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1

Question 3

If you lift a book from the floor to a table, what kind of energy does the book gain?

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1

Question 4

What is the formula for calculating work?

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3

Question 5

If you push a wall with all your might but it doesn't move, have you done any work?

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1

Question 6

Which of the following is NOT a form of energy?

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Question 7

What is the main source of energy for most living things?

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2

Question 8

If you drop a ball from a height, what happens to its potential energy as it falls?

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1

Question 9

What is the unit of measurement for energy?

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3

Question 10

Which of the following is an example of kinetic energy?

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2

Question 11

A force of 20 Newtons is applied to an object, moving it 5 meters in the direction of the force. How much work is done?

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2

Question 12

If you lift a 2 kg book from the floor to a shelf that is 1.5 meters high, how much gravitational potential energy does the book gain? (Assume g = 9.8 m/s²)

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1

Question 13

A 1 kg ball is rolling at a speed of 4 m/s. What is its kinetic energy?

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2

Question 14

How much work is required to lift a 5 kg object 2 meters vertically? (Assume g = 9.8 m/s²)

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Question 15

f a machine does 500 Joules of work in 10 seconds, what is its power output?

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Question 16

A spring has a spring constant of 100 N/m. How much elastic potential energy is stored in the spring when it is compressed by 0.1 meters?

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3

Question 17

If you double the mass of an object while keeping its velocity constant, what happens to its kinetic energy?

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1

Question 18

A force of 10 N is applied to an object, but it doesn't move. How much work is done?

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Question 19

Which of the following scenarios involves the conversion of potential energy to kinetic energy?

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2

Question 20

What distance is a book from the floor if the book contains 196 Joules of potential energy and has a mass of 5 kg (given g = 9.8 m/s2)?

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0