Thank you for reporting, we will resolve it shortly
Q.
A small toy starts moving from the position of rest under a constant acceleration. If it travels a distance of $10 \,m$ in $t\, s$, the distance travelled by the toy in the next $t\, s$ will be :
$u =0,$ Say acceleration is a
For t s $10=\frac{1}{2}$ at $^{2}$
For $2 t s \,10+ x =\frac{1}{2} a (2 t )^{2}$
$\frac{10+x}{10}=\frac{4}{1}$
$x=30\, m$