Question

if a, b, c be the distance moved by particles moving with constant acceleration during l,m, n second respectively. show that a(m-n)+ b(n-l)+ c(l-m)=0​

Answer 1

Explanation:

Perimter=sum of all lengths of sides of triangle

⇒ Perimeter =3a {a= side of triangle }

⇒45=3a

⇒a=15cm.