If the initial velocity in horizontal direction of a projectile is unit vector $\hat{i}$ and the equation of trajectory is $y =5 x (1- x )$. The $y$ component vector of the initial velocity is.
(Take $g=10\,m / s ^{2}$ )
$4$
$3$
$5$
$80$
The length of second's hand in watch is $1 \,cm.$ The change in velocity of its tip in $15$ seconds is
The figure shows a velocity-time graph of a particle moving along a straight line The correct displacement-time graph of the particle is shown as
A swimmer dived off a cliff with a running horizontal leap. What must his minimum speed be just as he leaves the top of the cliff so that he will miss the edge at the bottom ....... $m/s$ is $2\ m$ wide and $10\ m$ belows the top of the cliff .
The figure shows a velocity-time graph of a particle moving along a straight line The total distance travelled by the particle is ........ $m$
Give examples of one dimensional, two dimensional and three dimensional motion.