Question

What is the force required to change the velocity of an object of mass 4 kg from 2m/s to 4m/s in one second

Answer 1

v = 4 m/s

u = 2 m/s

m = 4 kg

t = 1 s

F = ?

we know, F =ma

a = (v-u)/t

a = (4-2)/1

a = 2

F = ma

F = 4*2

F = 8N