Madison pushes with a 160-N horizontal force on a 20-kg crate of coffee resting on a warehouse floor. The force of friction on the crate is 80 N. Show that the acceleration is 4 m/s2.

Answer 1

F=160 N
m=20 kg
F_fr=80 N
Net force causing acceleration = 160-80
=80 N
Use Newton's second law,
F=ma
a=F/m
=80/20
=4 m/s²