Question

Define three equations of motion

Answer 1

1. V = u + at   -- It defines velocity acquired by a body in particular time t.

2. s = ut + 1/2 at^2  ---  It defines Distance traveled by a body in time t.

3. v^2 = u^2 + 2as   ---  It defines Velocity acquired by a body in a distance 's'.


Hope this helps!

Answer 2

1st equation: v=u+at
It is the velocity time relation where the initial velocity= u final velocity= v
As the body has constant the acceleration the value of v can be calculated over time t with this equation.
2nd equation: s=ut+1/2at^2
This is displacement time relationship
The initial time t= 0s then finat time =ts . Initial displacement=0m final=sm. With constant acceleration and initial velocity the displacement s with change in time can be calculated with this equation.
3rd equation: 2as= v^2-u^2
the velocity displacement relationship
The initial velocity= u final= v
Initial displacement = 0 final=s
With constant acceleration we can find the displacement or the velocities by this formula.