Question

calculate displacement of car travelled with initial velocity 12m/sec and increases it's velocity to 16m/sec in 3 sec

Answer 1

First form 1st equation of motion calculate a

v=u+at

⇒a= (v-u)/t = 4/3 m/s²

now use 3rd equation of motion

v²-u² = 2 a s

⇒s= (16²-12²)/(4/3)

⇒s = 84 m