Question

define acceleration and write equation of motion

Answer 1

aceeleration is define as rate of change in velocity per unit time 
   a=dv/dt 

Answer 2

The rate of change of velocity is called acceleration.
acc.= final velocity-initial velocity/ time
a=v-u/t


first equation of motion:-
v=u+at
second equation of motion:-
s=ut+1/2at
third equation of motion:-
v^2-u^2=2as



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