2. Edward needs to pick up his textbook from the floor to study for his science test. He exerts a force of 386 N and lifts it up 1.7 m in the air to put it on the table. How much work did he do on the book?
3. Anna is pushing on the wall with a force of 32 N. Is she doing any work on the wall? Explain.
4. Bob is pushing a 13 kg desk and moves it 4 m. How much work did he do on the desk?
5. Chloe moving a 23 g laptop 49 cm on to her lap. How much work is she doing on the laptop?
Questions on Energy
1. Define the word "energy", "potential energy", and "kinetic energy".
2. Classify each of the following as potential energy or kinetic energy:
a) A car is rolling down the hill with the engines off.
b) An elastic is stretched back and is ready to be fired.
c) A rock is held in the air about to be dropped.
3. When someone is running to home plate in baseball, he/she stops very quickly. Why is this? Your answer should be related to energy.
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Questions on Work
1. Define the word "work" in terms of science.
2. Edward needs to pick up his textbook from the floor to study for his science test. He exerts a force of 386 N and lifts it up 1.7 m in the air to put it on the table. How much work did he do on the book?
3. Anna is pushing on the wall with a force of 32 N. Is she doing any work on the wall? Explain.
4. Bob is pushing a 13 kg desk and moves it 4 m. How much work did he do on the desk?
5. Chloe moving a 23 g laptop 49 cm on to her lap. How much work is she doing on the laptop?
Questions on Energy
1. Define the word "energy", "potential energy", and "kinetic energy".
2. Classify each of the following as potential energy or kinetic energy:
a) A car is rolling down the hill with the engines off.
b) An elastic is stretched back and is ready to be fired.
c) A rock is held in the air about to be dropped.
3. When someone is running to home plate in baseball, he/she stops very quickly. Why is this? Your answer should be related to energy.
Answers to Questions