Question

4
A body will remain in state of motion on rolling on ground if
A. friction is absent
B. friction is very large
C. friction is acting on same direction
D. all the above
5.
To sharpen the bland of a knife by rubbing it against a surface, which
of the following will be most suitable?
A. Stone
B. Plastic Block
C. wooden block
D. Glass Block​

Answer 1

4. C. friction is acting in the same direction

Answer 2

Answer:

4) friction is acting on same direction-c)

5) stone-a)