A body is thrown vertically upward with velocity $u$, the greatest height $h$ to which it will rise is,
$u/g$
$u^2/2g$
$u^2/g$
$u/2g$
"The direction in which an object moves is given by the direction of velocity of the object and not by the direction of acceleration". Give an example to justify this statement
Four speed$-$time graphs are shown below
Which graph represents the following case ?
$(i)$ A ball thrown vertically upwards and returning to the hand of the thrower ?
$(ii)$ A body decelerating to a constant speed and then accelerating.
What is meant by free fall ? Two bodies, one of mass $1\,g$ and other of mass $1\, kg$ are dropped from the same height in vacuum. Compare the two time intervals in which the two bodies will hit the ground.
An electric train is moving with a velocity of $120\, km h^{-1} .$ How much distance will it corer in $30 \,s$ ?
What is the nature of the displacement$-$time graph of a body moving with constant velocity ?