Question

fill in the blank: fill in the blank with the correct words.

1. static friction prevents your feet from slipping when you try to walk.
2. when a book slides across a table, _____________ friction is acting between the book

and the table.

1. _____________ friction is what you feel when riding a bike and the wheels make contact

with the ground.

1. air resistance is an example of _____________ friction.
2. rolling friction is _____________ than sliding friction.

word bank:
static, sliding, rolling, fluid, weaker

Explanation:

• For question 2: When an object slides, sliding friction acts. A book sliding on a table is a case of sliding.
• For question 3: Bike wheels rolling on the ground involve rolling friction.
• For question 4: Air is a fluid, and air resistance is fluid friction.
• For question 5: Rolling friction is weaker than sliding friction as it offers less opposition to motion.

Answer:

1. sliding
2. Rolling
3. fluid
4. weaker