Question

A constant force acts on a 5 kg object and reduces its velocity from 7m/s to 3m/s in a time of 3s. find the force ?????
plezzz help

Answer 1

mass =5kg
final velocity('v') =3 m/s
initial velocity('u') =-7 m/s('-' because the body is trying to stop therefore the velocity will be negative)
time ('t') =3 seconds
force=mass *v-u/t
force=5*3-(-7)/3
force=15+7/3
force=22/3
force=7.3 Newton