question_answer

Which of the following statements is correct?

(i) A force can change the direction of a moving ball.

(ii) An iron object is repelled by a magnet when it is brought near it.

(iii) A smooth surface produces more friction in compare to a rough surface.

(iv) Friction between our feet and the ground makes it possible for us to walk.

A) (i) and (ii)          

B) (i) and (iv)

C) (ii) and (iv)        

D) Only (iv)

E) None of these