1.

The velocity of an object can be changed by (i) Changing the speed (ii) Changing the direction of motion (iii) Changing both the speed and direction of motion (iv) None of the above

A. (i) and (ii) only
B. (ii) and (iii) only
C. (i) and (iii) only           
D. (i), (ii) and (iii)
Answer» E.


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