Question

An object starts from rest and acquires a velosicity 20ms-1 in 4s. Find its acceleration.

Answer 1

u=0

v=20m/s

t=4s

a=(v-u)t

a=(20-0)/4=5m/s^2

Answer 2

Answer:

u = 0m/s

v = 20m/s

t = 4s

a = ?

a = v - u / t

a = 20m/s - 0m/s / 4s

a = 5m/s^2

hope it helps