Question

describe the equation of motion by graphical method - 1) v=u +at 2) s= ut +1/2at 2( square) 3) v2(square) + 2as

Answer 1

i) v=u+at

So.. acceleration=v-u/t
Then, a*t=v-u
at=v-u
So.. V=u+at. (proofed)

ii) s=ut+1/2at^2
So.. Average velocity=u+v/t
U+v/2
Displacement=average*time
S=s/t
S=u+at
S=u+(u+at)*t/2
S=(u+u+at) *t/2
S=(2u+at) *t
S=2ut+at^2
Then... S=2ut/2+1/2at^2
So.. S=ut+1/2at^2(proofed)

iii) u^2=v^2+2as
v^2= u^2+2a(ut+1/2at^2)
v^2=u^2+2as(proofed)..


Hope it helps....
Thanx. Bro.