Recent content by brown20b

would it be zero?

not sure if it's zero or 9.8sin30

Homework Statement A 5.0 kg mass is released from rest, at the top of a frictionless 30° inclined plane. Calculate the kinetic energy of the mass when it has slid 40cm down the incline starting from rest. (ANS = 9.80 J) Homework Equations KE=1/2(mv^2) a=v/t d=v1t + 1/2a(t^2) v2^2=v1^2...