Pls help i need it now :c

Objective: Infer how friction affects movement Materials: sting, big thick book, table, spring balance, 6 pencils Science in Action

1. Tie the string around the big thick book and place the book on a table.
2. Attach the other end of the same string to the spring balance horizontally.
3. Take note of the reading on the scale while this book is at rest. Record the reading in the follow table.
4. Pull the string balance and the book together along the table. Take reading on the scale while the book is moving and record it in the table.
5. Place the pencils to serve as rollers underneath the book and then pull the book along the table again. Take reading on the scale as the book moves with the rollers and record it in the table. Think of the answer to each question about the activity. Then write it on the lines.

1. What type of friction was shown when the book was at rest? when the book was moved without rollers? when the book was moved with the rollers? A. when the book was at rest ____________________________________________________________________________________ B. When the book was moved without the rollers ____________________________________________________________________________________ C. When the book was moved with the rollers ____________________________________________________________________________________ 2. Based on readings on the scale, which condition produced by the greatest fictional force The least? ____________________________________________________________________________________ 3. How did each type of friction affect the movement of the book? Conclusion: I learned that_________________________________________________________________________________________________________________________________________
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