A car accels from rest at a constant rate of 2.0m/s2 for 5.0 s.?

Question

What's the speed of the car at the end of the time? And How far does the car travel in this time?

Answer 1

Vf = at + Vi

Vf = final velocity (what we're are looking for)
t = time (5s)
a = acceleration (2m/s^2)
Vi = intial velocity (0m/s, because the car stars from rest)

Vf = 2(5) + 0
Vf = 10m/s

Answer 2

Vf = Vi + at
= 0 + 2*5 = 10

Xf - Xi = V1*t + 1/2*a*t^2
= 0*5 + 1/2*2*5^2
= 25

So the final speed is 10 m/s and the total distance traveled is 25 m

Answer 3

vf = a*t +vo and
d=1/2a t^2+vot+do
in this case vo and do are 0 so
vf=10m/s
d=25 m