A car tavels a distance of 100 m with a constant acceleration and average velocity of 20 m per second .The final velocity acquire D by

the car is 25m per second .find the initial velocity and acceleration of car

ave) = total distance/ total time =s/t

t=s/v(ave) = 100/20 = 5 s

s=v₀t+at²/2 ….(1)
v= v₀+at
a= (v -v₀)/t ….(2)
Substitute (2) in (1)
2s= v₀t +vt
v₀ =( 2s –vt)/t =( 200 -25•5)/5 = 15 m/s
a=(v -v₀)/t =(25-15)/5 = 2 m/s²