Check up the only correct statement in the following :-
Check up the only correct statement in the following :-
- A
A body has a constant velocity and still it can have a varying speed.
- B
A body has a constant speed but it can have a varying velocity.
- C
A body having constant speed cannot have any acceleration.
- D
A body in motion under a force acting upon it must always have work done upon it.
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Shown here are the velocities and acceleration vectors for a man in several different types of motion. In which case is the man slowing down and turning to the right
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A particle is moving on a circular path of radius $r$ with uniform velocity $v$. The change in velocity when the particle moves from $P$ to $Q$ is $(\angle POQ = 40^\circ )$
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A wheel is rotating at $900\, r.p.m.$ about its axis. When the power is cut-off, it comes to rest in $1\,minute$ . The angular retardation in $radian/s^2$ is:-
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