Learning Task 6:
Study the following situations and answer the question for each.
Remember what you have learned about gravity and friction. Write
your explanations on your answer sheet.
1. Place a book on top of a table. What keeps the book from
falling? How is this possible?
2. Roll a marble on top of a level surface. Make it stop. Slide a light
book on top of the same level surface by giving it an initial push.
Did the book continue to slide? What is responsible for making
the sliding book slow down and eventually stop?
3. Drop a small stone and a piece of paper from the same height
at the same time. Observe closely the motion of the stone and
the paper as they fall. Which of them reached the ground first?
Why did not the other one reach the ground at the same time
as the first?
4. What is the importance of friction in our daily life?
5. Why do we need gravity?
Study the following situations and answer the question for each.
Remember what you have learned about gravity and friction. Write
your explanations on your answer sheet.
1. Place a book on top of a table. What keeps the book from
falling? How is this possible?
2. Roll a marble on top of a level surface. Make it stop. Slide a light
book on top of the same level surface by giving it an initial push.
Did the book continue to slide? What is responsible for making
the sliding book slow down and eventually stop?
3. Drop a small stone and a piece of paper from the same height
at the same time. Observe closely the motion of the stone and
the paper as they fall. Which of them reached the ground first?
Why did not the other one reach the ground at the same time
as the first?
4. What is the importance of friction in our daily life?
5. Why do we need gravity?
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Answer:
1. Gravity pulls the book down, but it doesn't fall down. Therefore there has to be some force that also pushes the book up.
2.the marble did not continue to slide/slip. Friction is responsible for making the sliding marble slow down.
3.of course the stone will fall first than the paper because of the weight of the stone is heavier than the paper, therefore the paper will slowly fall down.
4. friction is important because it is a resistance force slow down or prevents motion.
5.we need gravity because without it we could not live earth without it.
Explanation:
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