Question

MATCH THE FOLLOWING
Column A
1. Oil
2 Static friction
3. Treaded tyres
4 Drag
5. Smooth surface
& Rolling friction
Column B
(i) 'The frictional force offered by fluids
(ii) Lubricant
(iii) Must be overcome before an object can be set in motion
(iv) Prevent vehicles from skidding
(v) Less than sliding friction
(vi) Less irregularities
(vii) More irregularities​

Answer 1

Answer:

1. (ii)

2.(iii)

3.(iv)

4.(vii)

5. smooth surface- (vi)

rolling friction- (v)

Answer 2

Answer:

1 oil - lubricant

2 static friction - must be overcome before an object can be set in motion

3 treaded tyres - prevent vehicles from skidding

4 drag - the frictional force offered by fluids

5 smooth surface - less friction

6 rolling friction - less than sliding friction