Q.No.3.4: - Specify the correct statement:-
(a) An object can have a constant velocity even its speed is Changing.
(b) An object can have a constant speed even its velocity is
Changing
(c) An object can have a zero velocity even its acceleration is not zero.
(d) An object subjected to a constant acceleration can reverse its velocity.
Ans: - The correct answer is (b).
(c) is true for a body in SHM at extreme position where v is 0 but a is max.
ReplyDelete(d) is true for a body thrown up where g is the acceleration which is constant but at the highest point the velocity hecomes 0.