Question

Write three equation of motion and derive any one equation of motion with

graphical explanation.
for class 9​

Answer 1

Answer:

The following are the three equation of motion: First Equation of Motion : v=u+at. Second Equation of Motion : s=ut+\frac{1}{2}at^2. Third Equation of Motion : v^2=u^2+2as.

Answer 2

Answer:

acceleration

= change in velocity/ time

=(final velocity - initial velocity) / time

=(oc-dc) /oe

=DC/oe

a=DC=ab=at from the graph eb=ea+ab

v=u+at

this is the first equation of motion

s=area of the quadrangle doeb

= area of the rectangle doea + area of the triangle dab

=( ae × oe) +(1/2×ab× da)

s= ut +1/2at²

this is the second equation of motion

s=area of tapezium doeb

=1/2× sum of length of parallel side× distance between parallel sides

=1/2×( od+be) × oe

s=1/2×(u+t) × t

since a=( v-u) /t or t =(v- u) /a

s=1/2×( v+u) ×( v-u) / a

2as= v²- u²

v²= u²+2 as

this is the third equation of motion