Question

question no 20 plz thanx

Answer 1

$\sqrt{ \frac{ {u}^{2} + {v}^{2} }{2} } = velocity \: at \: mid \: point \\ hence \: u = 5 \: v = 25 \\ putting \: values \\ we \: get \\ \sqrt{ \frac{25 + 625}{2} } \\ = \sqrt{325}$

=18 {approx}