A man goes $10\,m $ towards North, then $ 20\,m$ towards east then displacement is........$m$
$22.5$
$25$
$25.5$
$30$
For a moving body at any instant of time
A particle moves in a straight line so that its displacement $x$ at any time $t$ is given by $x^2=1+t^2$. Its acceleration at any time $\mathrm{t}$ is $\mathrm{x}^{-\mathrm{n}}$ where $\mathrm{n}=$ . . . . .
The correct statement from the following is
Consider the acceleration, velocity and displacement of a tennis ball as it falls to the ground and bounces back. Directions of which of these changes in the process
The velocity time graph of a body is shown in Figure. It implies that at point $B$ :-