GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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either true or false
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False
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neither true nor false
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true
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Detailed explanation-1: -So we cannot say that whenever acceleration is zero, the object is not moving. It may be moving with a constant velocity. So the given statement is false.
Detailed explanation-2: -4) a) Can an object be moving when its acceleration is zero? If so, give an example. Yes, an object that was set in motion in the past by some force, but that is no longer being acted on by a net force, is moving but with zero acceleration, i.e. it is moving at constant velocity.
Detailed explanation-3: -If an objects acceleration is zero, then its speed must remain constant.
Detailed explanation-4: -yes, it is possible. If an object is in motion but its speed is constant and direction of the motion is also not changing, its acceleration is zero and still it is in motion.
Detailed explanation-5: -Derivative of velocity with respect to time is acceleration. That means if accelerations is zero, velocity must be constant. Now that constant could be anything like it could be 5 m/s . Also if the velocity is 0(which is itself a constant) also indicates that acceleration is zero.