Question

Find the magnitude of the net force on a 20 kg mass if its accelerates uniformly from 2m/s to 5.8m/s in 3s

Answer 1

f=m×a
a=v-u/t
= 5.8-2/3
=1.26
f=20×1.26
=25.32

Answer 2

hope it will help you see the attachment above