Question

A car moves in a straight line from rest at t=0 it accelerates with 2m/sec2 What is displacement and velocity if time is 2 sec

Answer 1

we have

u=0

t=2sec

a=2m/sec2

from Newton's second equation of motion

s=ut+1/2at2

on putting the values we get

s=4m

now from 1st equation of motion

v=u+at

v=4m/s

here is your solution.