Q.
Which of the following four statements is false?
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a
A body can have zero velocity and still be accelerates
b
A body can have a constant velocity and still have a varying speed
c
A body can have a constant speed and still have a varying velocity
d
The direction of the velocity of a body can change when it’s acceleration is constant
answer is B.
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Detailed Solution
about (1)option ,at the extreme position of oscillator, velocity = 0, but acceleretion is not 0,about(3)option, body moving on circular path, can have constant speed with varying velocityabout(4) acceleration is rate of change of velocity,hence option (2) is false
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