posted by Megan on .
A 20 N force acts on a 10 kg object parallel to the object's displacement. If the force acts for 32 m, what is the final kinetic energy, in J, of the object assuming it starts from rest?
a=F/m = 20/10=2 m/s².
KE=mv²/2= m2as/2=mas=10•2•32=640 J