The velocity acquired by a body moving with uniform acceleration is $30\,ms ^{-1}$ in $2$ seconds and $60\,ms ^{-1}$ in four seconds. The initial velocity is $.............\frac{m}{s}$
$4$
$0$
$2$
$10$
What is the relation between displacement, time and acceleration in case of a body having uniform acceleration
A train moves from rest with a uniform acceleration $a$ . Attaining a maximum speed $v$ it starts moving with uniform retardation $a$ . Assuming $s$ = total distance covered in the unidirectional motion of the train, its total time of journey and maximum speed are (respectively).
A particle experiences a constant acceleration for $20 \,sec$ after starting from rest. If it travels a distance ${S_1}$ in the first $10\, sec$ and a distance ${S_2}$ in the next $10 \,sec$, then