A girl of mass $50\, kg$ jumps out of a moving boat of mass $300\, kg$ on to the bank with a horizontal velocity of $3\, m s ^{-1}$. With, what velocity, does the boat begin to move backwards ?
Give examples to distinguish
$(i)$ Distance and displacement.
$(ii)$ Speed and velocity.
$(iii)$ Acceleration and retardation.
What can we conclude about the motion of a body depicted by following velocity$-$time graphs ?
Which of the following figures (Fig.) represents uniform motion of a moving object correctly ?
The speed$-$time graph of a body is a straiaht line parallel to time axis. The body has