Check up the only correct statement in the following :-
A body has a constant velocity and still it can have a varying speed.
A body has a constant speed but it can have a varying velocity.
A body having constant speed cannot have any acceleration.
A body in motion under a force acting upon it must always have work done upon it.
A particle moves in $x-y$ plane according to rule $x = {\rm{asin}}\omega t$ and $\;y = {\rm{acos}}\omega t$. The particle follows
If a force of constant magnitude acts in direction perpendicular to the motion of a particle, then its
Two particles having mass $M$ and $m$ are moving in a circular path having radius $R$ and $r$. If their time period are same then the ratio of angular velocity will be
A particle moves in a circle of radius $25\, cm$ at two revolutions per second. The acceleration of the particle in $meter/second^2$ is
Two particles $A$ and $B$ are moving in uniform circular motion in concentric cirdes of radius $r_{A}$ and $r_{B}$ with speed $v_A$ and $v_B$ respectively. The time period of rotation is the same. The ratio of angular speed of $A$ to that of $B$ will be