Question
A particle starting from rest and moving with a uniform acceleration along a straight line covers distances $a$ and $b$ in successive intervals of $p$ and $q$ second. The acceleration of the particle is
✓
Answer
(b)
Let $x$ be the acceleration. Then
$a=\frac{1}{2}\,x p^2$
$a+b=+\frac{1}{2} x(p+q)^2$
Solving these two equations, we get
$x=\frac{2 b}{(q+2 p) q}$
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