Question

Fill in the blanks:

1.Rolling friction is________
than the sliding friction.

2.We make grooves in the tyres of bicycles to______friction.

3. Bullet trains have_______
bodies.

4. The wheels of trains are made up of steel to_______the rolling friction.

5. The frictional force exerted by fluids is called________

6. The direction of friction is always__________to the direction of motion of the object.

7. Rough surfaces have________friction, while smooth surfaces have

8. _________surfaces exert greater friction than liquids and gases.
friction.​

Answer 1

Explanation:

8) solid

7) more

6)opposite

5)pressure

4)3)2)1)dont no...sorry

2)make

Answer 2

Answer:

1 lesser

2 reduce

3 streamlined

4 reduce

5 drag

6 oppose

7 more

8 solid

Explanation:

It helps u..... I'm also from class 8......