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 o 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 of the some 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?what is a paragraph of point

1.Although the book is under the force of gravity, the normal force by table which acts equal and opposite to the gravity prevent the book from falling.

2.The book did not continue to slide.

Friction is responsible for making the sliding book slow down and eventually stop.

3.the paper is much speeder bacause its flat And the stone is small so it motion to aur gravity is slow

4.Friction can slow things down and stop stationary things from moving. In a frictionless world, more objects would be sliding about, clothes and shoes would be difficult to keep on and it would be very difficult for people or cars to get moving or change direction.

5.Gravity is very important to us. We could not live on Earth without it. The sun's gravity keeps Earth in orbit around it, keeping us at a comfortable distance to enjoy the sun's light and warmth.