Question

What is the acceleration of car which started from rest and acquired a velocity of 40m/s in 8 s

Answer 1

Answer:

5 m/s²

Explanation:

car started from rest and acquired a velocity of 40m/s in 8 s

initial velocity, u = 0

final velocity, v = 40 m/s

time, t = 8 s

$\text{acceleration, a}=\frac{v-u}{t}=\frac{40-0}{8}=\frac{40}{8}=\boxed{5\ m/s^2}$

Answer 2

Answer:

5m/s2

Explanation:

u2=u1+at

u1=0

u2=40m/s

t=8s

a=u2/t

=40/8

=5m/s2